Who is calling you? The passive form of the sentence is-
By whom have you been called?
By whom you are being called?
By whom are you called?
By whom are you being called?
Explanation:
Correct Answer is: By whom are you being called?
By whom have you been called?
By whom you are being called?
By whom are you called?
By whom are you being called?
Correct Answer is: By whom are you being called?