The first sentence in the first paragraph plus the rest of the paragraph makes A WRONG.
The last sentence in paragraph 3 makes answer choice B WRONG.
Second to last sentence in the second paragraph makes answer choice C RIGHT.
In the article last two paragraphs it talks about disagreement over whether or not vegan far is "better" but never stated their ways better therefore making D WRONG.
The problem is that cows are getting sick due to a disease that appeared in England in 1986. The solution that they went with is to get sick cows off the food supply