The correct options are
C The power of the Centre becomes supreme in case of Emergency.
D The decision of union legislature overrules the state legislature.
India has three lists which share the power between the Central and state governments, it is a federal feature. The ‘unitary’ feature of the Indian constitution has distributed powers among the central and state government. In case of a conflict in laws on the subjects in the concurrent list, the union legislature’s decisions overrule the state legislature’s decisions. The Centre has the power to appoint the Governor in each state, who is the ceremonial head of the state.