关于prep320中一个讲解的困惑

kkbear

320中有道题的解释中说连词and在连接句子时，只能连接并列的独立句子（即主句），and后面的句子不能与从句并列

但是再看下面的这个例子，也是320中的

Most of the purported health benefits of tea comes from antioxidants--compounds also found in beta carotene, vitamin E, and vitamin C that inhibit the formation of plaque along the body's blood vessels.

 

(A) comes from antioxidants--compounds also found in beta carotene, vitamin E, and vitamin C that

(B) comes from antioxidants--compounds that are also found in beta carotene, vitamin E, and vitamin C, and they

（C）come from antioxidants--compounds also found in beta carotene, vitamin E, and vitamin C, and

(D) come from antioxidants--compounds that are also found in beta carotene, vitamin E, and vitamin C and that

(E) come from antioxidants--compounds also found in beta carotene, vitamin E, and vitamin C, and they

答案是D，不是说and不能连接从句，使两个从句并列吗？很疑惑，望NN们指点迷津，不甚感激！

MRFROG

come from antioxidants--compounds that are also found in beta carotene, vitamin E, and vitamin C and that

这是两句并列的定语从句，同时修饰compounds