This is a problem in the review exercise section of my book that I'm having problem with. I compiled these codes to try to look for the solution, but...

This is a problem in the review exercise section of my book that I'm having problem with. I compiled these codes to try to look for the solution, but it's giving me an error. What did I do wrong?Question: In the following code snippet, what is the value of the return statement for x = 4 and n = 4?int foo(int x, int n){if (n == 0) return 1;return x * foo(x, n-1);}Choices for solution:A. 9B. 81C. 256D. 346