You have to find the sum of digits of a number given that the number is always greater than 0. Which of the following ba

[answerhappygod]

#include<stdio.h>
int recursive_sum_of_digits(int n)
{
if(n == 0)
return 0;
return n % 10 + recursive_sum_of_digits(n/10);
}
int main()
{
int n = 1201;
int ans = recursive_sum_of_digits(n);
printf("%d",ans);
return 0;
}
a) if(n == 0) return 1
b) if(n == 1) return 0
c) if(n == 1) return 1
d) no need to modify the base case