Price spread

Three investor want to buy a share of ABC Inc. They enter three bids on company’s stock of $5, 5.01, 5.03. Also, the sellers want to sell ABC shares, the offer price is 5.03, 5.06, and 5.13. What is the price spread after the first trade was immediately executed? 
老师您好， 这道题的答案是0.05. 请问是因为第一次trade的价格是5.03， 所以第一次trade之后，5.03变成last price，然后bid price变成5.01，ask price变成5.06所以price spread 就是5.06-5.01=0.05 是这样吗？