There was nothing about West Point in this discussion. Trump stated what Carson has said about himself.
No, he didn't. He told O’Riley that Carson HIT his mother with a hammer. Carson didn't hit her, he said he “wanted” to hit her, but his brother stopped him.
Trump always goes to the next level and exaggerates what someone says. Trump also said Carson is pathological now and always will be.
Carson takes care of his mother at this time - she lives with him and his wife. He credits his mother for the success he has had in life. Although she could not read when she had the kids, she made them read books and write book reports to her. She learned to read and became a success in her own right.