Suppose you invest $20,000 by purchasing 200 shares of Abbott Labo (ABT) at $50 per share, 200 shares of Lowes (LOW) at 530 per share, and 100 shares of Bal Corporation (BLL) at 540 per share Suppose over the next year Ball has a return of 124% Lowes has a return of 20%, and Abbott Labs has a retum of -10%. The return on your portfolio over the year is: OA 3.5% OB0% OC. 5.2% OD 7%