We are selling my wifes atv this week . She has n't ridden it in two years so we decided to sell it and buy a two up machine instead . Two years ago a piston skirt broke off cracking the case and bent a rod , at that time I decided to rebuild the machine as it was used quite often until then . So we sent the motor off to a very reputable mechanic for a rebuild , this is when we found out the case was cracked and the entire motor would have to be replaced .
According to the above context, choose the best option to answer the following question.
Question: Why did the narrator opt to rebuild the machine ?
Options:
A. The ATV frame malfunctioned .
B. A rod bent .
C. The ATV frame bent .
D. None of the above choices .


B