Sadik Inc.'s bonds currently sell for $1,330 and have a par value of $1,000. They pay an $110 annual coupon and have a 10-year maturity, but they can be called in 4 years at $1,130. What is their yield to call (YTC)?

5.23%

b. 8.27%

c. 6.43%

d. 7.19%

e. 4.77%