OG11的一道题目，请教

Within 20 years it will probably be possible to identify the genetic susceptibility an individual may have toward any particualr disease. Eventually, effective strategies will be discovered to counteract each such susceptibility. Once these effective strategies are found, therefore, the people who follow them will never get sick.

The arguement above is based on which of following assumptions?
A) For every disease there is only strategy that can prevent its occurrence
B) In the future, genetics will be the only medical specialty of any importance.
C) All human sickness are in part the result of individuals' genetic susceptibilities
D) All human are genetically susceptible to some disease.
E) People will follow medical advice when they are convinced that it is effective

我认为D也没有什么问题，C里面有一个in part，而D是All，为何说D是错的。D取非也能削弱原文啊？请大家指点一二，谢谢

D只说是to some disease，那另一些疾病就不可能靠文中所说的方法来治疗了，C说的是All human sickness，正确

其实C的意思概括起来是：所有人类的疾病都与GS有关（你不要去想有关到什么程度）

把C取非：所有人类疾病都与GS无关

能够理解了吗

LZ的理解看来又错了!!

in part, 部分地（当副词用，修饰are）

所有的人类疾病都与GS有关，并不代表所有的人类疾病是GS的子集

LZ真的不能用全集、子集的概念来理解这道题