For a class template, the binary scope resolution operator (::) is needed:

a. Only in the definitions of the member functions defined outside the class.
b. Both in the prototype and definition of a member function.
c. Only if multiple class-template specializations will be created from this class template.
d. In neither the definition nor prototype of member functions.

a. Only in the definitions of the member functions defined outside the class.

Computer Science & Information Technology

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