7. A uniform rope of weight 50 N hangs from a hook as shown above. A box of weight 100 N hangs from the rope. What is the tension in the rope?
(A) 75 N throughout the rope
(B) 100 N throughout the rope
(C) 150 N throughout the rope
(D) It varies from 100 N at the bottom of the rope to 150 N at the top.