What Positive Effect Has Resulted from the Creation of Councils

What positive effect has resulted from the creation of councils of government?

A) Councils have substantially improved the operational capacity of rural local governments by providing expertise to small local jurisdictions that cannot afford to hire specialized staff.
B) Councils have provided local governments with additional funding and incentives to join regional government arrangements.
C) Councils have reduced the need for state involvement in regional affairs.
D) Councils have increased cooperation in relation to urban sprawl issues and urban revitalization.