The following information was completed from the stock records of a company. Jan 1 inventory on hand 200units @ 1.2$. Jan I received 1000units @ 1$per unit. Jan 10 received 260units @ 1.05$ per unit. Jan 20. Issued 700units. Feb 4 received 400units @ $1.15 per unit. Feb 21 issued 1000units. March 16 issued 620units. April 12 issued 240units. May 10 received 550units @ $1.10 per unit. May 25 issued 380units Requirements: calculate the value of closing stock , cost of goods sold using the following methods of valuing material