The quantity theory of money is a theory of how a) the money supply is determined. b) interest rates are determined. c) the nominal value of aggregate income is determined. d) the real value of aggregate income is determined.

C) the nominal value of aggregate income is determined

Explanation:

The quantity theory of money states that nominal aggregate income is determined by money supply. It is assumed that money velocity is constant in the short run and so would not impact nominal aggregate income.

The quantity theory of money is obtained from the equation of exchange which is:

(Money supply × velocity ) = (price × agregrate output)

Dividing both sides by velocity gives,

Money supply = (1/velocity) × ( price × agregrate output)

It is assumed velocity is constant, therefore,

Money supply = k × (price × agregrate output)

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