can you please show me how to do this? thank you.

For each of the following pairs of Treasury securities (each with $1,000 par value), identify which will have the higher price: a. A three-year zero-coupon bond or a five-year zero-coupon bond? b. A three-year zero-coupon bond or a three-year 4% coupon bond? c. A two-year 5% coupon bond or a two-year 6% coupon bond