质点动能定理，说的是___The Kinetic Energy Theorem for Particles says___
选项：

A:合外力所做的功等于质点动能的增加；The Work done by the External Force is equal to the increase of the Kinetic Energy of the Particle;;
B:合外力所做的功等于质点势能的增加；The Work done by the External Force is equal to the increase of the Potential Energy of the Particle;;
C:合外力所做的功等于质点机械能的增加；The Work done by the External Force is equal to the increase of the Mechanical Energy of the Particle;;
D:以上一个也不对；Neither of the above is true;