What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int a[4] = {1, 2, 3, 4};
    int *ptr  =  &a[2];
    float n = 1;
    ptr = ptr + n;
    printf("%d\n", *ptr);
}

A. 4

B. 3

C. Compile time error

D. Undefined behaviour

Answer: Option C