A. This matter has been looked into by you.
B. This matter may be looked into by you.
C. This matter should be looked into by you.
D. This matter into looked by you.
The given sentence contains one of Model verb (Model Verb = will, shall, can, may, might, could, might, must, would). It is in active voice.
Rule :
Subject + Model verb + be + V3 + Optional Objects.
