Read "Does a stock market crash affect the economy?" (Layton et al 2012, pp. 364–5) Immediately following the attack on the US on 11 Sept 2001, the stock markets plunged and many observers expected a recession in the US (and possibly elsewhere). Q) Using the AD-AS model, explain their prediction. Note: You may use websites for research however the focus of the assessment is to demonstrate your understanding of the AD-AS model.