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: Why is the person selling watermelons ?
Answer: They are looking to make it their main business .It is their primary income .They are trying to make extra money .None of the above choices .