ABC Corp's outstanding bonds have a $1,000 par value, and they mature in 5 years. Their yield-to-maturity is 9%, based on semi-annual compounding, and the current market price is $853.61. The bond's annual payment is $53. What is the bond's current yield?

a.) 3.11%

b.) 6.22%

c.) 3.02%

d.) 6.04%