E contracts with A to sell 600 electric engines at a cost of $1,750 each. E agrees to deliver the engines in three installments of 200 engines each on June 7, July 7, and August 7, respectively. On June 1, E delivers 195 engines together with a note stating that the remaining five engines would be delivered the following day and that all future deliveries would be complete and timely.

Does A have to accept the delivery of 195 engines?

A. Yes, because E's delay does not substantially impair the value installment or the value of the contract.

B. Yes, because E is the master of the offer.

C. No, but if A rejects the delivery it will have waived any claim for damages against E.