10. The Covid-l9 crisis a'ected consumers' desire to spend income during the pandemic, as households increased saving rates in anticipation of a xture without Covidl9 when they can spend their money. At the same time, Covid-l9 meant that businesses could only operate at reduced capacity. a. Explain how Covid-l9 affected the consumption function using an equation. [2 points] b. Explain how the change in the consumption mction affected the IS curve. Draw a diagram. [2 points] c. Explain how the change in the IS curve affected the AD curve. Draw a diagram. [2 points]