A borrower takes out a 10/1 (30-year term) Hybrid ARM for $250,000 with an initial contract interest rate of 6.5%. The interest rate will adjust according to the 1 yr UST rate, plus a margin of 4%. At the first reset date, 1 yr UST is at 4%. What will the borrowers' monthly payment be immediately after the first reset?

a)$1,806.26

b)$1,772.75

c)$1,284.32

d)$1,834.41