Which of the following bonds has the greatest price risk?

	a.	A 10-year, $1,000 face value, 10% coupon bond with annual interest payments.
	b.	A 10-year, $1,000 face value, 10% coupon bond with semiannual interest payments.
	c.	A 10-year $100 annuity.
	d.	A 10-year, $1,000 face value, zero coupon bond.
	e.	All 10-year bonds have the same price risk since they have the same maturity.