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 teachers informed the students that the class had been cancelled.

• Informing the students that the class is cancelled was done by the teachers.
• The class has been cancelled, this the teachers informed the students.
• The students were informed by the teachers that the class had been cancelled.
• The teachers cancelled the class and informed the students.