Reuse inheritance tree of one out of multiple classes in Python

I have 2 classes each implementing a specific behavior and using parent classes.

Now I have a new class that needs to use either behavior but which one can only be determined during/after construction.

That is currently being done by using multiple inheritance. However as the base classes were not written taking this into account the contained super() call will call into the wrong sub-tree

Consider the following MWE:

class A:
    def __init__(self, use_b):
        self.init_b = use_b  # Maybe complicated

    def foo(self):
        print("A")


class B(A):
    def foo(self):
        super().foo()
        print("B")


class C1(A):
    def foo(self):
        super().foo()
        print("C1")


class C2(C1):
    def foo(self):
        super().foo()
        print("C2")


class D(B, C2):
    def __init__(self, *args):
        super().__init__(*args)
        self.use_b = self.init_b

    def foo(self):
        if self.use_b:
            B.foo(self)
        else:
            C2.foo(self)

d = D(True)
d.foo()  # Expected: "A B"

print("NEXT")
d = D(False)
d.foo()  # Expected: "A C1 C2"

Somewhere in A a property is initialized that is used in D to determine the appropriate class to use. Both of the candidates B and C2 inherit from the base class as they are/used to be independent implementations

It works for calling C2.foo but calling B.foo ends up calling foo in C2 and C1 too, which I do not want.

I do know WHY this happens (MRO) but have no good idea to resolve this.

I might be able to have D only inherit from A, initialize this and then decide which subclass to use, i.e.:

class D(A):
    def __init__(self, *args):
        super().__init__(*args)
        if self.init_b:
            self.impl = B(*args)
        else:
            self.impl = C2(*args)

    def foo(self):
        self.impl.foo()

But this has 3 issues:

1. It initializes at least A multiple times. That is bad for performance and might fail if A.__init__ modifies the ref-type args (e.g. lists)
2. It might fail if there are some args only B and C2 understand so A can't handle them
3. I'll need to implement and wrap all methods of A that could be called. If I forget one that was overwritten by either of the B or C classes the behavior will be silently wrong. Similar for properties

Is there a clean and safe way to handle this scenario?