Select the best answer for the question. 4. The past five monthly returns for Company A's stock are 3.28 percent, 4.32 percent, 3.5 percent, 2.9 percent, and 2.5 percent. What's the average monthly return over those six months? A. 13.3 percent B. 6.3 percent C. 3.3 percent D. 16.5 percent