Answer: 1. B. is the correct answer
and the second one is B. will have no heirs to the throne not C.
Explanation: because Macbeth didn't really wanted to be king and his heart wasn't set on being king but his wife was really set on being the new queen.. So she forced him to kill Duncan and cause Duncan was going to be king he was the next air to throne to becoming king. I hope this answer helps.