Boxwood Company sells blankets for $30 each. The following was taken from the inventory records during May. The company had no beginning inventory on May 1. Date Blankets Units Cost May 3 Purchase 5 $20 10 Sale 4 17 Purchase 9 15 20 Sale 5 23 Sale 3 30 Purchase 9 19 Assuming that the company uses the perpetual inventory system, determine the ending inventory value for the month of May using the FIFO inventory cost method. a. $171 b. $237 c. $201 d. $137