I forgot -- I think C's racist remark must have been some random thing she overheard and was repeating. I was quizzing her the other day about boys in her class -- just asking if there were any boys she played with and whether or not any of them were nice -- that type of thing. She said, "Yes, there is one boy M. I like him -- he's very nice. I play with him". M is just as dark-skinned as L, so whew! I feel much relieved.