Seller Orally Contracts to Sell Goods to Buyer for a Total

Multiple Choice

Seller orally contracts to sell goods to Buyer for a total price of $450.Several days later,both parties orally agree to raise the price to $550 because of a shortage of these goods.When the goods are delivered,Buyer refuses to accept them.Seller sues.Both parties are merchants.In this situation,which of the following is true?

A) Buyer wins; this contract must be in writing to be enforceable.
B) Seller wins; the contract is enforceable without a writing and Seller can collect $550.
C) Seller wins; the contract is enforceable without a writing,but Seller can collect only $450.
D) Buyer wins; both the original contract and the modification needed to be in writing.