Read the following context and choose the best option to answer the question.
Context: 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: What is the maximum amount money we have lost selling the watermelons ?
Options: 
- We lost 40 dollars at most .
 - We lost 60 dollars at most .
 - None of the above choices .
 - We lost 45 dollars at most ,


None of the above choices .