A. The innocent commoners had been victimised by the thieves.
B. The innocent commoners will be victimised by the thieves.
C. The innocent commoners are victimised by the thieves.
D. The innocent commoners were victimised by the thieves.
Given sentence is in simple present tense and it is in active voice.
Rule :
Subject + (is/am/are) + V3 + Other agents
