O'Brien Ltd.'s outstanding bonds have a $1,000 par value, and they mature in 25 years. Their nominal annual, not semiannual yield to maturity is 9.25%, they pay interest semiannually, and they sell at a price of $700. What is the bond's nominal coupon interest rate?

Select one:

a. 4.86%

b. 7.01%

c. 6.15%

d. 5.72%

e. 6.58%