What will be the output of the following C code?

#include <stdio.h>
int mul(int a, int b, int c)
{
    return a * b * c;
}
void main()
{
    int *function_pointer;
    function_pointer = mul;
    printf("The product of three numbers is:%d",
    function_pointer(2, 3, 4));
}

A. The product of three numbers is:24

B. Compile time error

C. Nothing

D. Varies

Answer: Option B