求诸GWD1-20

GWD 1-20 Tom, Jane, and Sue each purchased a new house. The average (arithmetic mean) price of the three houses was $120,000. What was the median price of the three houses?
(1) The price of Tom’s house was $110,000.
(2) The price of Jane’s house was $120,000.

GWD的答案是C， 我觉得应该B吧， 不知道对不对？

1-20    http://forum.chasedream.com/dispbbs.asp?BoardID=22&ID=66182

答案是B...LZ是对的~这题早有讨论~