... to the bank later? If you are, can you

The correct answer on the question is answer 1) Will you be going.
The person asks another person if he is going to the bank. He use Future Indefinite, and he use WILL BE. Also he use the word LATER, which also mean that the situation will happen in the future.
The option 2) Have you gone - Present Perfect Time.
The option 3) Present Simple Time.
The option 4) Past Simple Time.