indont understand this question 1 and A to C

Grant Company was formed on December 1, 2019. The following information is available from Grant's inventory record for Product X. Units Unit Cost January 1, 2020 (beginning inventory) 1,600 $18.00 Purchases: January 5, 2020 2,600 $20.00 January 25, 2020 2,400 $21.00 February 16, 2020 1,000 $22.00 March 15, 2020 1,800 $23.00 Grant Company sold 1,400 units during the first 3 months of the year. Instructions Prepare schedules to compute the ending inventory at March 31, 2020, under each of the following inventory methods using the periodic method: (a) FIFO. (b) LIFO. (c) Weighted average. Show supporting computations in good form. GIVE FE