Consider the u. s. market for loanable funds in a closed-economy model. answer the following questions about each scenario. a. the government starts offering a national savings bond to increase private savings, which pays a higher return than many other options available on the market. this will shift the , the interest rate and equilibrium amount of borrowing will . b. suppose the economy is now open. due to rapid economic expansion in china, the chinese government decides to buy u. s. treasury notes with some of its surplus. this will shift the , the interest rate and equilibrium amount of borrowing will . c. a new computer software program is introduced into the market, which offers businesses that purchase it promising returns on their investment. this will shift the , the interest rate and equilibrium amount of borrowing will . d. the government increases the capital gains tax, which taxes earnings on assets in the stock market. this will shift the , the interest rate and equilibrium amount of borrowing will