What are the arithmetic and geometric average returns for a stock with annual returns of 7 percent, 9 percent, 2 percent, and 16 percent? List the arithmetic answer first. 8.38 percent; 7.31 percent 8.38 percent; 7.50 percent 7.50 percent; 7.31 percent 7.50 percent; 8.38 percent 7.31 percent; 7.50 percent