I need help with a-c

Question 3 The table below provides some hypothetical data on macroeconomic accounts for three countries represented by A, B, and C and measured in billions of currency units. A B C Private Household Saving 700 500 600 Tax Revenue 500 500 500 Government Spending 600 350 650 Investment Spending 800 400 450 a) Calculate the trade balance and the net inflow of foreign saving for each country. b) State whether each one has a trade surplus or deficit (or balanced trade). c) State whether each is a net lender or borrower internationally and explain