Deck: Deck General

1. A a closed unit encloses its contents with a permanent structure and the open unit does not
2. B a closed unit encloses its contents with a semi-permanent structure and the open unit does not
3. C an open unit encloses its contents with a permanent structure and has an access door that the closed unit does not have
4. D an open unit encloses its contents with a semi-permanent structure and the closed unit does not

Tip: press A-D to answer