请教了！Most of the purported health benefits of tea的谓语动词是单数还是复数呀？

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.

1. comes from antioxidants—compounds also found in beta carotene, vitamin E, and vitamin C that

2. comes from antioxidants—compounds that are also found in beta carotene, vitamin E, and vitamin C, and they

3. come from antioxidants—compounds also found in beta carotene, vitamin E, and vitamin C, and

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

5. come from antioxidants—compounds also found in beta carotene, vitamin E, and vitamin C, and that

above is the SC and the correct answer is b

大全上的题目？ 呵呵benefits为subject...so we need a plural form verb to modify "benefits"