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

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 Flair is a guarantor,then the guaranty is re?quired to be in writing because of

A) the debtor's right of redemption.
B) the co-signer's right of contribution.
C) the creditor's transfer of possession.
D) the Statute of Frauds.