What Does the Term "Police Power" Reference

What does the term "police power" reference?

A) The residual powers retained by each state to safeguard the health and welfare of its citizenry.
B) The residual powers retained by the federal government to enforce valid laws and regulations.
C) The powers granted to local government to enter residences without a search warrant.
D) The powers granted to state governments to tax for the purposes of having law enforcement.
E) The powers granted to state government to imprison citizens of other states who commit crimes within a state.