Which of the following statements is most correct?

		a. If the underlying asset does not pay a dividend, it does not make sense to exercise a call option prior to its expiration date.
		b. Call options generally sell at a price less than their exercise value.
		c. If a stock becomes riskier (more volatile), call options on the stock are likely to decline in value.
		d. Answers b and c are correct.
		e. None of the answers above is correct