Suppose you invest $20,000 by purchasing 200 shares of Abbott Labs (ABT) at $50 per share, 200 shares of Lowes (LOW) at $30 per share, and 100 shares of Bat Corporation (BLL) at $40 per share. Suppose over the next year Ball has a return of 12.1%, Lowes has a return of 25%, and Abbot Labs has a return of - 10%. The return on your portollo over the year is: A. 7,4% B. 9.8% C. 4.9% D. 0%