Q17Multiple correct4 Marks28 Apr 2024

M is an m x n matrix with m != n. We wish to calculate the sum of each column and store the sums in a list called col_sums. Note that col_sums will have n elements. Select all correct implementations.

A

m, n = len(M), len(M[0]) col_sums = [sum([M[i][j] for i in range(m)]) for j in range(n)]

B

m, n = len(M), len(M[0]) col_sums = [] for j in range(n): csum = 0 for i in range(m): csum += M[i][j] col_sums.append(csum)

C

m, n = len(M), len(M[0]) col_sums = [] for i in range(m): csum = 0 for j in range(n): csum += M[i][j] col_sums.append(csum)

D

col_sums = [sum(col) for col in M]