Suppose stock ABC's beta is 0.8. If the stock market (e.g., S&P 500 Index) increases by 1% tomorrow, then ABC stock's price _______ tomorrow.

a) will, on average, increase by 1%

b) will, for sure, increase by 1%

c) will, on average, increase by 0.8%

d) will, for sure, increass by 0.8%