income velocity of money

[ranjankumarnayak5]

If the annual income velocity of money is 3, then the total real money stock in the economy is:
(A) Three times the real GDP
(B) One third of real GNP
 (C) One third of nominal GNP
 (D) None of the above

[Eco16]

I think it is one third of nominal GDP. So none of the above.