A.
self.cursor.execute("update students set Name=%s , =%s , Age=%s where No=%d" , (Name , , Age , No))
B.
self.cursor.execute("update students set Name=? , =? , Age=? where No=?" , (Name , , Age , No))
C.
self.cursor.execute("update students set Name=%s , =%s , Age=%s where No=%s" , (Name , , Age , No))
D.
self.cursor.execute("update students set Name=% , =% , Age=% where No=%" , (Name , , Age , No))