What will be the output of the following C code?#include <stdio.h>#include <stdarg.h> void function(int, ...); int main() { function(21, 13, 15, 17, 101, 113); return 0; } void function(int n, ...) { int num, k = 0; va_list start; va_start(start, n); while (k != 5) { num = va_arg(start, int); k++; } printf("%d", num); }

• A. 13
• B. 15
• C. 17
• D. 101
• E. 113