Visitor Visa

I have 2 questions :

  1. I have selected B1/B2 visa in DS 160 ,while sponsoring for my in laws for Visitor visa, does it have any impact in visa interview?

2)My father in law has retired from his business and is taken over by his sons, currently he doesnt have any income proof except bank statements to show (where he gets deposits from his son) , just in case if he is asked what he does for an income ?what should be his answer?