This stuff is usually just so they can create "most sellers have been affected positively by X" types of articles, emails and other media - in this case it would be managed payments.

Notice that they don't care how you use the funds once you get them, they just want to know whether you transfer from PP or not. 

They'd be looking for a majority 'C' answer so they can say direct transfers (via managed payments) are better for most sellers. A & B would be irrelevant to that goal, if you answer by selecting either of those, the "conclusion" would be it's had a neutral effect on every seller who doesn't select 'C'. People who just kept their funds in PayPal "obviously" don't do anything with their money, and people who transferred some money to bank accounts can just transfer some funds from bank to PayPal so that's a "same/same" situation as well.