以下哪个是增强技术遵循的准则?

以下哪个是增强技术遵循的准则?
A.Restricting and hindering dislocation motion renders a material harder and stronger.
B.Restricting and hindering dislocation motion decreases the hardness of a material.
C.Restricting and hindering dislocation motion are not related to the hardness of a material.
D.Restricting and hindering dislocation motion are not related to the toughness of a material.
正确答案：Restricting and hindering dislocation motion renders a material harder and stronger.