There are three teachers, civil servants, and bank staff, of which A is not a bank clerk, B is not a teacher, and C is not a civil servant. Teachers are older than B, and C is the youngest of the three. Based on the above conditions, the following statements are wrong:. ['A is a teacher.', 'B is a civil servant.', 'A is not a civil servant.', 'C is not a bank clerk.']