Figure 9.16 Date Beginning Balance: Number Cost Sales of Items per Item Price January 1 150 $34 January 22 Purchased 120 35 February 21 Sold 160 $75 April 8 Purchased 180 36 June 10 Sold 190 80 August 19 Purchased 110 37 September 28 Sold 50 82 October 14 Sold 60 22 82 a. Determine Rollrbladz's cost of goods sold and ending inventory under periodic LIFO. b. Determine Rollrbladz's cost of goods sold and ending inventory under perpetual LIFO.