Per month payment of Cheri = $625.77
So, total payments made in 3 years =

As mentioned, Cheri had filed for bankruptcy several years prior, she ended up paying a higher interest rate. With a better credit rating, her payments could have been $431.21 per month.
So, If she would have paid 431.21 per month for 3 years, in total she would have paid =

Hence, Cheri paid =
more
So, Cheri paid option D = $7004.16 more.