PCAP-31-03 Exam - Question 24

To determine which classes are declared properly, we need to consider the inheritance hierarchy and ensure that there are no conflicts or circular dependencies. The base class is A, while B and C are derived from A. Option A (class Class_3(A,C): pass) is incorrect because class C is already a child of class A, leading to a conflict. Option B (class Class_2(B,C): pass) is correct because B and C are derived from A, and there is no conflict or circular dependency. Option C (class Class_4(A,B): pass) is incorrect because class B is already a child of class A, leading to a conflict. Option D (class Class_1(C,B): pass) is correct because both C and B derive from A without any conflicts. Thus, the properly declared classes are found in options B and D.