Answer: C. $67.53
Explanation:
Here the total amount of the loan = $ 5000
Interest rate = 7.5%
His monthly payment = $437.26
Since, if he pay off the loan in 12 months,
Then his total payment =

And, if he pay off the loan in 7 month,
In which his total payment in 6 months =

His payment in 7 month = $2556.03
Thus, the total payment he did =2623.56 + 2556.03 = $5179.59
Thus, his total saving = 5247.12 - 5179 = $67.53
Therefore, Option C is correct.