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 had transported all his equipment to his factory.

• All his equipment are transported to his factory by him.
• All his equipment were transported to his factory by him.
• All his equipment have transported by him to his factory.
• All his equipment had been transported by him to his factory.