The following order book exists for a particular stock. The last trade on the stock was at $75.52 Buy Orders Sell Orders Shares 250 600 900 75 Price $75.51 75.50 75.49 75.47 Price $75.54 75.55 75.57 75.58 75.59 Shares 200 500 1,000 400 750 a. If you place a market buy order for 100 shares, at what price wil it be filled? (Round your answer to 2 decimal places.) Share price b. If you place a market sell order for 200 shares, at what price will it be filled? (Round your answer to 2 decimal places.) Share price