Which Statement is most accurate? a. The roles and functions of IGOs and NGOs in world governance are very similar b. There is lot of overlap in the roles and functions of IGOs and NGOs in world governance and where the roles are not the same the differences are not very important c. There is a lot of overlap in the roles and functions of IGOs and NGOs in world governance but where the roles aren't the same the differences are very important d. The roles and functions of IGOs and NGOs in world governance are totally different