( Part A and Part B, ) Im having trouble with this two part problem on accounting. If anyone get help me with this question this will be greatly appreciated. Please make sure its correct because I'm trying to learn from this. The couple of times I've posted this in the past they have been wrong. Again, please make sure it's correct and box the final answer. Thank you

Part A

Part B

Dongrea Company reported the following year-end information: beginning work in process inventory, $180,000; cost of goods manufactured, $866,000; beginning finished goods inventory, $252,000; ending work in process inventory, $220,000; and ending finished goods inventory, $424,000. Plano Company's cost of goods sold for the year is a. $544,000. b. $694,000. c. $874,000. d. $812,000. Frisco Company's accounting records reflect the following inventories: Dec. 31, 2019 Dec. 31, 2018 Raw materials inventory $310,000 $260,000 Work in process inventory 330,000 160,000 Finished goods inventory 540,000 250,000 During 2019, $800,000 of raw materials were purchased, direct labor costs amounted to $670,000, and manufacturing overhead incurred was $640,000. Assume that all raw materials are direct materials. Frisco's cost of goods sold for the year is a. $1,500,000. b. $790,000. O c. $1,350,000. $1,600,000. d