How does a federal system differ from an unitary system

A Under a federal system, all power is held by the federal government
B Under a federal system, a small group of people holds most government power
C Under a federal system, power is shared among different levels of government
D Under a federal system, one person holds all government power

2 answers

C Under a federal system, power is shared among different levels of government
Which branch of government is correctly matched to its power?