Why was August so rude to summer when I sat with her at lunch the Monday after Halloween?

AAugust was still really upset about the things that Julian said about him in homeroom on Halloween.

BAugust's stomach still hurt.

CAugust thought she would tell Mr. Tushman about all of their conversations.

DAugust thought summer was asked by Mr. Tushman to be friends with him, like Jack, and that was the only reason she sat with him.

Support your answer from the book Wonder.