A dog can provide sufficient power to pull a sled with a 60 N force at a steady 2.0 m/s. Suppose the dog is hitched to a different sled that requires 120 N to move at a constant speed. How fast can the dog pull this second sled?

A. 0.50 m/s 

B. 1.0 m/s 

C. 1.5 m/s 

D. 2.0 m/s