Which of the Following Situations Is Not a Bailment for Mutual

Which of the following situations is not a bailment for mutual benefit?

A) Acme Moving Company agrees to haul Smith's furniture from Maine to California.
B) John's neighbor agrees to watch John's cat while John is on vacation.
C) Ajax Warehouse agrees to store Jane's piano in its warehouse.
D) Rocko's Dry Cleaners agrees to store Rachel's fur coat for the summer.
E) George's Rent-All rents Jack a floor sander.