Two men pull on ropes connected to a large refrigerator ... ...

   Two men pull on ropes connected to a large refrigerator with forces 3000 N and 4000 N. If there are no other (unbalanced) forces, which of the following is NOT a possibility for the magnitude of the net (total) force?
(A) 500 N
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 02. The Language of Motion