Consider the following function that computes the value of $\binom{m}{n}$ correctly for legal m and n
int func(int m,int n)
{
if(n==0)||(m==n) return 1;
else return E;
}
In the function which is correct expression for E?
a)func(m-1,n)+func(m-1,n-1)
b)func(m-1,n+1)+func(m-1,n)
c)func(m,n)+func(m,n-1)
d)None