Four partners (Adams, Benson, Cagle, and Duncan) jointly own a piece of land with a market value of $400,000. Suppose that the land is subdivided into four parcels s1, s2, s3, and s4. The partners are planning to split up, with each partner getting one of the four parcels. Complete parts (a) through (e). (a) To Adams, s 1 is worth $40,000 more than s 3, s 3 and s 2 are equal in value, and s 4 is worth $20,000 more than s 1. Determine which of the four parcels are fair shares to Adams. The fair share(s) is(are) nothing. (Use a comma to separate answers as needed.)