input: Write a function to multiply two matrices, A and B, and return the resulting matrix C where each element is the product of the corresponding elements of A and B.
  assert matrixMultiplication([[3, 4], [1, 2]], [[7, 5], [0, 1]])
  assert matrixMultiplication([[1, 0], [0, 1]], [[1, 0], [0, 1]])
  assert matrixMultiplication([[2, 3], [4, 5]], [[6, 7], [8, 9]])
  assert matrixMultiplication([[0, 1], [1, 0]], [[1, 0], [0, 1]])
  assert matrixMultiplication([], [])
output: def matrixMultiplication(A, B):
      return [[A[i][j] * B[i][j] for j in range(len(A[0]))] for i in range(len(A))]