in Scheme

3. The binomial coefficient is defined as follows for n 0 and 0 SkSn: n! C(n, k) = (n-k)!k! Given the fact that: C(n,0) = 1, C(n,n) = 1 C(n,k) = C(n-1, k 1) + C(n-1,k) write a function to compute Cn, k)