The sentences below are from a CER. Which sentence below is written correctly?

A
Dr. Suess wrote Green Eggs and Ham on a dare. I know this because he made a bet that he could write a book using only 50 words.

B
After extensive research I know that Dr. Suess wrote Green Eggs and Ham on a dare. He bet his friend that he could write a book using only 50 words.

C
After reviewing text evidence, one must conclude that Dr. Suess is a creative author. After all, he wrote Green Eggs and Ham using only 50 words after a friend said he could not do it.

C

After reviewing text evidence, one must conclude that Dr. Suess is a creative author. After all, he wrote Green Eggs and Ham using only 50 words after a friend said he could not do it.