Lindsey offered orally to sell her racing bike to Tom for $3,500. Tom said he would pay $2,800 if he could borrow the money from his sister and Lindsey agreed and Tom paid her a $300 deposit. Tom came back the next day and told Lindsey he had the money, but Lindsey then changed her mind and refused to sell the bike and gave Tom back the $300. Tom then bought a similar bike from Alex. What does this case NOT illustrate?

		mitigation
		a counter offer
		a major breach of contract
		a contract missing consideration
		a conditional offer