Fact Pattern 18-1Olga Enters into a Contract to Buy a Refrigerator

Multiple Choice

Fact Pattern 18-1Olga enters into a contract to buy a refrigerator from a Prairie States Appliance store with the price to be paid in monthly installments. After thirty-six months of payments, Olga has paid more than twice the price of a similar stove. Eighteen payments remain due under the contract.
-Refer to Fact Pattern 18-1.Olga files a suit against Prairie States,claiming that their contract is so unfair and one sided that it would be unreasonable to enforce it.Olga is asserting 

A)  ​the concept of good faith. 
B)  ​the principle of fair trade. 
C)  ​the predominant-factor test. 
D)  ​the doctrine of unconscionability.