问题：
[单选题]因此,机器可以通过耗费距离或速度增加力,或者通过耗费力赢得距离或速度。()
A
Hence, a machine may gain force at the expense of distance or speed, or it may gain distance or speed at the expense of force.
B
Hence, a machine may gain force by consuming distance or speed, or it may gain distance or speed by consuming force.
