What will be the output of the following C++ code?

#include<iostream>
using namespace std;
class Add
{
	int x;
   public:
	Add(int x){
		this->x = x;
	}
	int operator()(int a){
		return x+a;
	}
};
int main()
{
	Add add_5(5);
	int a = 5;
	cout<<add_5(a);
	return 0;
}

A. Size of a data type in bits B. Size of a data type in bytes C. Size of a variable in bytes D. Size of a variable in bits

A. Char B. Float C. String D. Double

A. To declare a variable with dynamic storage duration B. To declare a constant C. To declare a variable with external linkage D. To declare a variable with static storage duration

A. None of the above B. They both have the same effect C. '++i' increments the value of 'i' before returning it, while 'i++' increments the value of 'i' after returning it D. '++i' increments the value of 'i' after returning it, while 'i++' increments the value of 'i' before returning it