Ten years ago, Alex bought 100 acres of raw land 20 miles south of Tulsa, for $100,000. This year Alex retired as well as decided to sell the land to raise some money. In order to sell property, he subdivided it in 10 lots of 10 acres each. This year Alex sold 5 lots for $310,000 and paid real estate commissions of $10,000. (a) What was the amount and character of Alex%u2019s income from the sale of 5 lots? (b) Would your answer to (a) be different if Alex had sold 6 lots this year for the same $310,000 and commission of $10,000? If yes, how?