XYZ Corp bonds have a $1,000 par value, and they mature in 5 years. Their yield to maturity is 10%, based on semiannual compounding. If the current market price is $853.61, what is the bond's annual coupon interest rate?

a) 5.3%

b) 5.8%

c) 6.0%

d) 6.2%

e) 6.4%