With explanation

For markets to work O A. buyers and sellers must be familiar with one another. O B. buyers and sellers must be registered in the market. O C. governments must define and protect property rights. O D. all of the above must hold.Voluntary exchange that occurs in a market O A. requires disinterested consumers. O B. is the result of voluntary opportunity cost. O C. is the result of cooperation between the buyer and the seller. O D. is the result of competition among sellers.Property rights K A. were recently eliminated in Australia. O B. are easy to implement in large countries. O C. provide incentives for selling. O D. are none of the above