What is the best way to change sentence 2 into two complete sentences?
ОА.

Unless Ms. Stockhold changed her mind, the entire class would have. To write a lengthy research paper,
and no me was happy about that.

OB.
Unless Ms. Stockhold changed her mind. The entire class would have to write a lengthy research paper,
and no one was happy about that.

C. Unless Ms. Stockhold changed her mind, the entire class would have to write a lengthy research paper.
No one was happy about that.

D. Unless Ms. Stockhold changed her mind, the entire class would have to write. A lengthy research paper,
and no one was happy about that.