In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice. John was arrested on a charge of murder, but for lack of evidence he was released. 1). The police arrested John on a charge of murder, but for lack of evidence released him.2). John was arrested on a charge of murder but was released for lack of evidence.3). The police arrested John on a charge of murder, but for lack of evidence he was released.4). John had been arrested on a charge of murder, but for lack of evidence he had been released.