Topanga Group began operations early in 2021. Inventory purchase informotion for the quarter ended Morch 31, 2021, for Topanga's only product is provided below. The unit costs include the cost of freight. The company uses a periodic inventory system to report inventory and cost of goods sold. Sales for the quarter, all at $9 per unit totaled 36.000 units leaving 27,000 units on hand at the end of the quartec: Required: 1. Calculate Topanga's cost of goods sold for the first quarter using: a. FIFO b. LIFO c. Average cost 2. Calculate Topanga's gross profit ratio for the first quarter using FFO, LIFO, and Average cost. 3. Comment on the relative effect of each of the three inventery methods on the gross profit ratio. Complete this question by entering your answers in the tabs below. Calculate Topanga's cost of goods sold for the first quarter using FIFO. Complete this question by entering your answers in the tabs below. Colculate Topanga's cost of goods sold for the first quarter using FIFO. Complete this question by entering your answers in the tabs below. Calculate Topanga's cost of goods sold for the first quarter using LIFO. Complete this question by entering your answers in the tabs below. Complete this question by entering your answers in the tabs below. Calculate Topanga's gross profit ratio for the first quarter using FIFO, LIFO, and Average cost. Complete this question by entering your answers in the tabs below. Comment on the relative effect of each of the three inventory methods on the gross profit rat