24. Nicholas Industries had the following inventory transactions occur during 2014: Units Cost/unit 2/1/16 Purchase 54 $45 3/14/16 Purchase 93 $47 5/1/16 Purchase 66 $49 The company sold 140 units at $65 each and has a tax rate of 30%. Assuming that a periodic inventory system is used, what is the company's gross profit using FIFO? (rounded to whole dollars) a. $2,388 b. $2,628 c. $6,472 d. $6,712