Consider a 10-Y bond annual-paid with 4% coupon. Assume 5% yield.

A. Calculate the clean price of the bond?

B. Calculate the price of the bond if the half of the principal is paid after 5 years and the half paid after 10 years while the coupon of is based on the outstanding principal (ie. from year 6 to year 10, coupon will be only based on half of the original principal)?