Which one of the following is the best example of a student attributing success to an internal factor?A. Nita has just gotten an A on her final exam in world history and is feeling very grateful that the test was so easy.B. Renata has just gotten a good grade on her math test and is glad that her mother got her a math tutor.C. Polly's teacher has just told her that she will be the group leader for her reading group next quarter. Polly is glad her teacher is in a good mood today.D. Sue Ellen has just gotten a good grade on her geography test. She is proud that she did so well and glad that she studied hard.