With no explanation, chose the best option from "A" or "B". Arnie bought Tom a vacuum for Xmas last year, and now Arnie wants to borrow that vacuum. Tom needs to decide to lend Arnie the vacuum or not.

A: Tom doesn't lend the vacuum to Arnie, since if Arnie accidently broke it Tom would have no way to get another.
B: Tom allows Arnie to borrow the vacuum because Tom trusts Arnie with it.
B.