Irwin Industries had the following inventory transactions occur during the current year: Units Cost/unit Feb. 1 Purchase 40 $42 Mar. 14 Purchase 60 $43 May 1 Purchase 53 $44 The company sold 100 units at $75 each and has a tax rate of 25%. Assuming that a periodic inventory system is used and operating expenses are $2,000, what is the company's gross profit using LIFO?(rounded to whole dollars) $3,145 $3,147 $3,655 $3,885 $4,355