After we finished work on the deck we drove around different places selling watermelons out of the back of Norm 's truck . We got about 150 for $ 100 and sold them 1 for $ 3 or 2 for $ 5 . We figured it 'd be an evening of easy money . Only we only sold about 20 so we did n't even make back our investment .

Question: Where did the watermelons come from ?
Answer: None of the above choices .They grew on the back of the truck .Norm grows them on his farm .They appeared during a wind storm .