4. math of interest. please solve correctly

Muhammad's grandfather has been contributing to a savings account for his education. Each year on his birthday, he contributed $488.90 starting on the day he was born, and ending on the day he turned 14 . The account pays 5.375% compounded monthly. If he doesn't start university until his 18 birthday, how much money will be in the account to help pay his tuition a. X=$14,401.78 b. X=$12,363.79. c. None of the other answers is correct. d. X=$13,586.59. e. X=$14,335.13. Certainty?: C=1 (Unsure: C=2 (Mid: >67% ) C=3 (Quite sure: >80% )