Anyway , my pop and uncle drained all the oil out and fixed Indy up right quickly . But now . I went to pick Indy up from the mechanic today ( the engine thing only got finished over the weekend ) and when I got there , there was a huge dent in the roof . Apparently Billy had the car parked on the street on Saturday and a branch fell on Indy .
According to the above context, choose the best option to answer the following question.
Question: What 's a possible reason they drained all the oil out ?
Options:
- Because the engine thing got finished over the weekend .
 - None of the above choices .
 - Because there was a huge dent in the roof .
 - Because the car needed an oil change .


Because the car needed an oil change .