According to MLA guidelines, which of these is the best paraphrase of the following sentence from the passage?

These rural farmers were entirely dependent on potatoes and entirely unprepared when, in 1845, a new form of plant disease spread across Ireland, destroying their beloved crop.
A.
Entirely dependent on potatoes, these farmers were not prepared when, in 1845, a new form of plant disease spread across Ireland, destroying their beloved crop (Murray 4).
B.
These rural farmers were completely dependent on potatoes and entirely unprepared when, in 1845, a new form of plant disease spread across Ireland, destroying their beloved crop (Murray 4).
C.
There were other farmers who grew corn and barley. However, they exported most of these goods to Britain so that they could make more money (Murray 4).
D.
Irish peasants relied solely on potatoes; they were not ready when a new potato blight appeared in 1845. The disease ruined potatoes all over Ireland (Murray 4).

The correct answer uses different wording to give the same information found in the original text. When you paraphrase information from a book in an essay, make sure to include in parentheses the last name of the author of the book and the page number of the book where you found the information. Otherwise, you are plagiarizing. You plagiarize when you present someone else's ideas as your own.