Study the following figure carefully and choose the correct alternative to fill in the blank:

Balance of Payments Account
The Balance of Payments (BoP) Current Account comprises trade in goods (merchandise), trade in services, and transfer payments. Option (B), "Trade of services," accurately completes the flowchart. Options (A) Investments, (C) external borrowings, and (D) external assistance are components of the Capital Account, not the Current Account.
Total consumption expenditure by households under Keynesian Economics is a combination of __________ and ________ .
Surplus in Balance of Payments (BOP) refers to the excess of _________ .
Suppose for a hypothetical economy:
\(C = 100 + 0.75Y\) (where \(C\) = Consumption and \(Y\) = Income)
\(I_0 = 400\) (\(I_0\) = Autonomous Investment)
Value of Investment Multiplier (\(K\)) would be ____________ .