[Toshi's Dolls] Toshi Owns a Specialty Doll Store and Purchases

Multiple Choice

[Toshi's Dolls] Toshi owns a specialty doll store and purchases dolls regularly from Yolanda, a doll distributor. For the past few years, Toshi and Yolanda have signed yearly contracts that set forth the terms of the agreement. Although delivery terms are set forth in the agreement, if the delivery comes a day or two late or if Yolanda substitutes doll purses for shoes, Toshi does not complain, as she knows the next shipment will have more shoes than purses. Yolanda has added a new line of designer dolls, and Yolanda asks Toshi to sign a separate agreement with regard to the new doll line which includes a clause that accessories must conform to the order only as to quantity. Toshi's first order of the new line includes a large shipment of dolls and doll purses, but no doll shoes. The first delivery of the new doll line is scheduled to arrive on December 1, however, it arrives on December 2 and includes very few doll shoes and instead includes many doll purses. Yolanda refuses to accept the late shipment and calls Toshi to complain and also tells her that some of the dolls have ugly faces and she is worried they will not sell. Yolanda says that Toshi's been in the doll industry for years and should know that some dolls have flaws on their faces and she has to accept the dolls faces as they are.
-What is Yolanda's best defense as to why the doll shoes and purses do not conform perfectly to the order?

A) The perfect tender rule
B) An exception to the perfect tender rule was outlined in the parties' agreement.
C) Trade usage.
D) Course of performance provides an exception to the perfect tender rule.
E) The substitution of additional purses for shoes did not substantially impair the value of the good.