Which of the following events are likely to increase the market value of a call option on a common stock? Explain. a. An increase in the stock’s price b. An increase in the volatility of the stock...

Which of the following events are likely to increase the market value of a call
option on a common stock? Explain.
a. An increase in the stock’s price
b. An increase in the volatility of the stock price
c. An increase in the risk-free rate
d. A decrease in the time until the option expires