What Is the Best Explanation of "Free Silver

What is the best explanation of "free silver"?

A) The U.S. government would promote prosperity by inflating the money supply through minting all the silver offered to it.
B) The U.S. government would promote prosperity by distributing cash subsidies to the unemployed, paid for by recent mining bonanzas on public lands.
C) The U.S. government would support farmers by buying up surplus crops with silver coin ("lard money") .
D) The U.S. government would support investors by allowing the purchase of silver on the open market.