Which of the Following Are Generally Considered to Be Types

Which of the following are generally considered to be types of decentralization?

A) Political decentralization, e.g. setting up regional elections.
B) Fiscal decentralization, e.g. granting tax or spending powers.
C) Administrative decentralization, e.g. the power to hire personnel.
D) Legislative decentralization, e.g. granting legislative powers.