true or false and please explain why

1. If in a gratuitous bailment the bailor must take great care of the item

2. Tenancy in common includes the right to survivorship

3. a counter offer nullifies an offer

4. The difference between adverse possession and proscriptive easement is that adverse possession cannot lead to outright ownership of the land

5. Melba and fred cannot own property in joint tenancy unless they are married