x = f(arg1, arg2);

where f is a functor and arg1 and arg2 are the arguments required by the functors?

a) f.call(arg1, arg2);

b) f.operator()(arg1, arg2);

c) f.operator(arg1, arg2);

d) f.operator(arg1, arg2)();

x = f(arg1, arg2);

where f is a functor and arg1 and arg2 are the arguments required by the functors?

a) f.call(arg1, arg2);

b) f.operator()(arg1, arg2);

c) f.operator(arg1, arg2);

d) f.operator(arg1, arg2)();

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b

Explanation: f(arg1, arg2) means we are calling the overlaoded () operator method which can be called using object f as follows f.operator()(arg1,arg2); In general, object.operator()(argument_lists);