The total value of saving in the economy must equal the

Question

The total value of saving in the economy must equal the total value of investment. Assume a closed economy where:

I= Investment,
S= S_private + S_public
S_private=Private Saving,
S_public=Public Saving,
C= Consumption Expenditure,
G=Government Expemditure,
Y=GDP,
TR= Government tranfers

which one of the following expressions shows the investment-saving equality?
A. S= Y+T-TR-G
B. S=Y-C-G
C. I= Y+TR-C-T
D. I= Y+TR-C-C