Joe is interested in an inventory costing system which results is frst month is being as high as possible. He ses only one produd. 1970 Mercedes 200 model cars for $40 apiece. On September 1st Joe bought 10 units for $25 each After 3 old on September 3rd, he dred 20 additional unter 523 each September 4th On September 7th, Joe sold eight units, followed by a sale of seven units on September 10th Joe decided to enter into a purchase agreement where he would buy the units every Monday for $22 aprice He did so on September 2m 19 and 2 remaining sales for the month were as follows: September 13th: 4 units sold September 18th 7 units sold September 22nd 9 units sold September 25th 11 units sold September 2005 units sold Which inventory costing method results in higher income for Joe? Showing your work use this method to calculate his prontas well as ending to