$2\mathrm{.}5.$ What is the major problem with multiple inheritance and when is it permissible and why?

A$.$ Multiple inheritance leads to the infamous diamond problem and it's only permissible if the

superclasses are interfaces. Otherwise, it would lead to ambiguity and low readability of the

code.

B$.$ Multiple inheritance leads to the infamous diamond problem and it's never permissible, as it

causes ambiguity and decreases the readability of the code.

C$.$ Multiple inheritance is always a beneficial feature, and diamond problem does not happen in

practice. That's why C$++$ allows it$.$

D$.$ Multiple inheritance leads to the infamous diamond problem and it's only permissible if the

superclasses are static classes. Otherwise, it would lead to ambiguity and low readability of

the code.