Derek sees his mom leave a room and cries. He is only one year old. Why is he crying? A .he doesn't realize his mom still exists. B. He thinks his mom is gone for good. C. Derek is indicating he is scared. D. Choices A and B.

Sorry about the calculator and me asap me asap because for real like some no one answers question one for me so that's why i'm posting them over to that way someone can at least answer number two or one for me if you do you so much if you do it would be a complete big blessing to me