Multiple Choice Question: 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 Ball Corporation (BLL) at $40 per share. Over the next year Ball has a return of 12.5%, Lowes has a return of 20%, and Abbott Labs has a return of -10%. The return on your portfolio over the year is:

A. 5.0%

B. 7.5%

C. 0%

D. 3.5%