Q1. Encircle the appropriate answer among the choices given below each question 1. Arguments of a functions are separated with a) comma b) semicolon 2. In a) pass by value 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 3. Functions that do not have a return type are called a) b) void c) . What is the output of this program? 1. #include 10 which zero using namespace std; void fun(int x, int y) ( > method, the values of parameters are copied from caller func b) pass by reference c) pass by voie x = 20; y = 10; } int main() ( Signature: int x = 10; fun(x, x); c) colon cout < < x; return 0; functions. null d) None b) 15 c) 20 of the following function prototypes is valid?