Answer:
C.conference committee
Step-by-step explanation:
A conference comittee is what is used when the Senate and the House of representatives pass a law that has different version in both cameras, or has been modified by one of the cameras, it´s already passed but there are discrepancies between the two passed laws. The conference comittee is formed by member both cameras to come to an agreement on the bill and modify it so both cameras pass the same bill.