Assuming we are examining the project described in the question above, what is the difference between the total interest payments at the end of the loan’s life span? What rate would the fixed income rate require to remain commensurate with the variable rate’s five-year interest rate increases?

a $80,835, 6.225%

b $7,312, 5.875%

c $7,315, 5.955%

d $8,084, 6.025%