A "Call Market" Is One Where

A "call market" is one where:

A) buyers and sellers can engage in decentralized trades between one another based on their respective bids and asks.
B) sellers post a price for their product and buyers are free to either buy or not buy at that price.
C) buyers post a price at which they are willing to buy and sellers are free to either sell or not sell at that price.
D) the buyer bids and seller asks are used to generate the underlying demand and supply curves, solve for the equilibrium price and then all trade takes place at that calculated equilibrium price.