Suppose that in the coming year, you expect Exxon Mobil stick to have a volatility of 42% and a beta of 0.9, and Merck's stock to have a volatility of 24% and a beta of 1.1. The risk free interest rate is 4% and the market's expected return is 12%. Which stock has the highest total risk? Exxon Mobil since it has a higher volatility Merck since it has a higher Beta ExxonMobil since it has a lower beta Merck since it has a lower volatility