An n-year bond with annual coupons has the following characteristics: i) The redemption value at maturity is 1890; ii) The annual effective yield rate is 6%; iii) The book value immediately after the third coupon is 1254.87; and iv) The book value immediately after the fourth coupon is 1277.38. Calculate n.

A. 21

B. 18

C. 20

D. 19

This is the multiple choice I was given, but this was all the information given to me.