Seven students, A, B, C, D, E, F, and G each have exams on seven different days of the same week starting on Monday and ending on Sunday of the same week. C has his exam on Sunday, and F has his exam on Monday. G has his exam on Tuesday. B has his exam on the day immediately following G's exam. E has his exam on the day immediately following A's exam. A has his exam on Thursday. D has his exam on which of the following days?