Reinvestment coupon income question note, his, question, investor, income

johnnyBuz

Question #110 Schweser Exam 1  Afternoon Session
A 3year, 6% coupon, semiannualpay note has a yield to maturity of 5.5%. If an investor holds this note to maturity and earns a 4.5% return on reinvested coupon income, his realized yield on the note is closest to:
A. 5.46%
B. 5.57%
C. 5.68%
This questions is killing me, and Schweser gives a lame explanation. Can some please help me out with this.
Thank You
Simon