The location is important because it shows that Gatsby is not from an old rich family, but rather that he is just some random person who suddenly earned a lot of money. The place where he bought his house is considered elite, but only for those who are new with money and are not considered to be some kind of "aristocracy"
I believe the answer is A) he is so upset that he loses his last hold on sanity and forces his men into a battle with Malcolm that they cannot win.
He is very sad that Lady Macbeth dies, and says he wishes she had died at a time when he could properly mourn her.
When he leads his men into battle, he says, "The queen, my lord, is dead,"
Hope this helps! Please let me know if I'm wrong :)
She feels betrayed and lonely.
I think it's B. questions
hope it helps