Question 1 Which of the following events are studied in Macroeconomics? Event (V (a) Increase 20 sen per litre of RON 95 as announced in the news recently. (b) The unemployment rate in Malaysia has been steadily at 1.3%. (c) Expanding the money supply decreases the interest rate, increases investment, and stimulates aggregate demand. (d) When a new technology is introduced in the production of lemonade, the supply of lemonade will increase. (e) The Chinese government makes it increasingly difficult for American firms to export goods to China