Most of the purported health benefits of tea

[liuhao1990]

Hi, help, please:

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

The OA is D, I know the parallelism of "that...and that...", but I do not know why (C) is incorrect. If this sentence can be expressed as "Most of the...benefits...come from...and inhibit...", it is still a parallel structure, isn't it?

[singh.181]

most-of-the-purported-health-benefits-of-tea-t2558.html

[jnelson0612]

Thanks singh!