Suppose you have $10,000 in cash and you decide to borrow another $10,000 at a 6% interest rate to invest in the stock market. You invest the entire $20,000 in an exchange-traded fund (ETF) with a 11% expected return and a 20% volatility. The expected return on your of your investment is closest to: O A. 16% O B. 18% O C. 10% OD. 21%