Fact Pattern 28-1A (Questions A12-A15 Apply)

Multiple Choice

Fact Pattern 28-1A (Questions A12-A15 apply)
Dollar Value Motors asks Estimable Bank for a loan to increase its vehicle inventory.Estimable requires Flair,Dollar Value's president,sign a personal guaranty to pay the debt if Dollar Value defaults.Meanwhile,to buy a pick-up truck from Dollar Value,Gina asks Harper to co-sign a credit application.
-Refer to Fact Pattern 28-1A.If,after the loan agreement is signed,Gina agrees to a higher rate of interest without telling Harper,then Harper is

A) discharged from the agreement.
B) liable at the higher rate of interest.
C) liable at the lower rate of interest.
D) liable for the principal only.