What is true with respect to the three versions of the quantity theory of money? A. In the Fisher version of the quantity theory, we get a ratio of the money stock to the flow of income. B. In the Cambridge cash-balance version of the quantity theory, money is held primarily for its medium of exchange function. O C. In the Income version of the quantity theory, the left side of the equation is the goods transfer side and the right side is the money transfer side. O D. In the Income version of the quantity theory, velocity is the average number of times per unit of time the stock of money makes final income transactions. O E. In the Fisher version of the quantity theory, the value of all intermediate transactions are netted out of the national income circuit