A)Explain in details why the aggregate demand curve is downward-sloping. Also, explain in details why the typical explanations for a downward-sloping demand curve of a particular product (a normal good) in microeconomics is not applicable in macroeconomics?(b) Explain in details the shapes of the short-run and long-run aggregate supply curves. How are these aggregate supply curves related to each other?

PART C (40 Marks): Answer all questions according to lecture discussion and you must show your step-by-step calculation/derivation with explanation or a zero will be assigned. CI. (a) Explain in details why the aggregate demand curve is downward-sloping. Also, explain in details why the typical explanations for a downward-sloping demand curve of a particular product (a normal good) in microeconomics is not applicable in macroeconomics? (b) Explain in details the shapes of the short-run and long-run aggregate supply curves. How oth