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. The Principal promised the boys a holiday.

• The boys have been promised a holiday by the Principal.
• The boys had been promised a holiday by the Principal.
• The boys were promised a holiday by the Principal.
• The boys are promised a holiday by the Principal.