In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice. He mailed his application for a new job.1). The application for a new job is mailed by him.2). The application for a new job was mailed by him .3). He is the mailer of the application for a new job.4). He was the mailer of the application for a new job.