please show all work and answer asap, thankyou so much.

Based on the information provided, answer the following questions.

A. Jeff wants to buy a Zuteck Company bond. Zuteck is issuing a 15-year, 10% annual coupon bond. If the current interest rate is 5%, how much should Jeff pay for this bond? Is Zuteck selling at a premium or discount? (1 point)

B. A year later, Jeff is considering buying a Sarada Company bond. Sarada is also issuing a 15-year, 10% annual coupon bond. The current market rate on this bond is 12%. How much should Jeff pay for this bond? Is Sarada selling at a premium or discount? (1 point)

C. Suppose Zuteck Company bonds mature in 20 years instead of 15. Which bonds, Zuteck Company or Sarada Company, have a lower interest rate risk? (1 point)