Problem 3: Suppose stock X trades on the New York Stock Exchange. Information from the limit order book (LOB) for stock X is contained below. Limit buy orders Limit sell orders Price Shares Price Shares $ 80.10 1000 $81.00 1500 $ 80.18 700 $80.75 700 $ 80.30 500 Suppose the specialist's quotes are as follows: Bid price $80.30 Ask price $80.70 Bid depth 600 shares Ask depth 800 shares (a) What is the bid-ask spread? (b) For each of the following scenarios answer all the questions below: Scenarios. 1. A market buy order for 400 shares comes in. 2. A market sell order for 600 shares comes in