Question: Assume that n = 3m and that the n-by-n matrices A, B, C are distributed around a three-processor ring. In particular, assume that processors 1, 2, and 3 house the left third, middle third, and right third of these matrices. For example, B(:, m + 1:2m} would be housed in Proc(2}. Write a parallel program for the computation C +- C+ AB.