feifei 63 help

feifei 63

63. Some good cooks are gourmet cooks who pride themselves on always using extravagantly rich ingredients in elaborate recipes. Some good cooks can be characterized as fast-food cooks. They may use rich ingredients as long as the recipes are easy to follow and take little time. Other good cooks are health food enthusiasts, who are concerned primarily with the nutritional value of food. But even though not all good cooks are big eaters, they all enjoy preparing and serving food.

If the information in the passage is true, which one of the following CANNOT be true?

(A) Most good cooks do not use extravagantly rich ingredients.

(B) Everyone who enjoys preparing and serving food is a good cook.

(C) More good cooks who use extravagantly rich ingredients are big eaters than are good cooks who do not use such ingredients.

(D) There are fewer good cooks who enjoy serving and preparing food than there are good cooks who are big eaters.

(E) Gourmet cooks, fast-food cooks, and cooks who are health food enthusiasts are all big eaters.

My question is why E is not right. As the sentense I highlight, it clealy says that not all cooks are big eaters.

Thanks 

(E) Gourmet cooks, fast-food cooks, and cooks who are health food enthusiasts are all big eaters.

Please look at the green words above. Remember that not all cooks are health food enthusiasts, so it is possible that all of the cooks who are health food enthusiasts are all big eaters.

Hence, E is wrong.

对于这题我还有疑问...

题目说cannot true，也就是说如下选项只要有可能发生，就应该排除，对么？

(A) Most good cooks do not use extravagantly rich ingredients.  针对第一句话，也就是说some= not most?

(B) Everyone who enjoys preparing and serving food is a good cook.  没有疑问

(C) More good cooks who use extravagantly rich ingredients are big eaters than are good cooks who do not use such ingredients.

nn解释说这个选项是无关，我怎么觉得这个选项应该是有可能发生的啊

(D) There are fewer good cooks who enjoy serving and preparing food than there are good cooks who are big eaters. 无疑问

(E) Gourmet cooks, fast-food cooks, and cooks who are health food enthusiasts are all big eaters. 有可能发生？

请nn解答！