When a closed economy is in equilibrium, we know with certainty that:

A.I = S

B.G = T and S = I

C.I - S = (G - T)

D.I = S + (G - T)

E.I - S = (T - G)

Which of the following is a component of money?

A.saving.

B.stocks.

C.bonds.

D.income.

E.none of the above.