You are pushing a stroller up a hill. There are two roads rising steadily to the hilltop, but one road is exactly twice as long as the other road. By choosing the longer road, rather than the shorter road, you(A) leave the force required to keep the stroller moving at constant velocity unchanged, while doubling the product of that force times the length of the road. [9.5% picked](B) double the force required to keep the stroller moving at constant velocity, while halving the product of that force times the length of the road. [2.5% picked](C) halve the force required to keep the stroller moving at constant velocity, while leaving the product of that force times the length of the road unchanged. [81.1% picked](D) leave the force required to keep the stroller moving at constant velocity unchanged, while halving the product of that force times the length of the road. [6.5% picked]