less of 后面是加可数还是不可数？

hinata1990

There is a widespread belief in the United States and Western Europe that young people have a smaller commitment to work and a career than their parents and grandparents and that the source of the change lies in the collapse of the "work ethic."
(A) a smaller commitment to work and a career than their parents and grandparents
(B) less of a commitment to work and a career than their parents and grandparents
(C) a smaller commitment to work and a career than that of their parents and grandparents
(D) less of a commitment to work and a career than their parents and grandparents had
(E) a lessening of the commitment to work and a career that their parents and grandparents had
选D。
查了一下之前的帖子，都是讨论最后用had还是did的，但是D里面的less of是跟可数名词a commitment and a career吗？less不是Little变来的吗，不是应该接不可数的吗？有人能帮忙解疑吗？谢谢了

jueyisizhan

同问为什么是less of a commitment?

HarrisZheng

less of 固定搭配
就是少一些的意思 可数不可数都可以修饰

飞飞5816

V. + more of/less of + n. 在更大/较小程度上，More of 和less of 修饰前面的动词
如： I will see less of you in the future.