Suppose you sell a March 2010 T-bond futures contract at 98:26.   Now it is time to consider delivery. You want to deliver on 03/15/2010. There are two bonds you are considering using. Bond A, which is quoted at 98:17, has a 6.25% coupon that matures in 11/15/2032 with a conversion factor of 1.0310.; Bond B, which is quoted at 97:05, has 5.5% coupon that matures in 06/15/2030 with a conversion factor of 0.9403.  Both bonds make semiannual coupon payments.

(1) Which bond should you use to deliver?

(2) What is the invoice price for the bond that you choose?