Anne Says, "I'll Sell You My Car for $2,500

Anne says, "I'll sell you my car for $2,500." Steve says, "I sure would like to buy it." We have an offer and acceptance:

A) and a valid contract
B) but no valid contract until delivery time is established
C) but no valid contract because the car is only worth $500, which is insufficient consideration
D) but no valid contract because no witnesses exist
E) none of the other choices; there is no acceptance