Context: Franklin gives two friends a ride in his wagon. One friend sits in the wagon at a time.
Franklin starts to pull the wagon across the yard. To move the wagon at the same speed each time, which friend does Franklin need to pull with a larger force?
A. a friend who weighs 21 pounds
B. a friend who weighs 35 pounds
From the given choices, select the correct answer and reply with the letter of the chosen option.

B