The following is the information related to the movement of the goods at Al-Silasil Company during the month of July 2011: Number of units 100 / 400 /200 /300 /500 Total 1500 Unit price 4/6/7/10/12 Total cost 400/2400 /1400 /3000 /6000 and upon inventory it is clear that there are 600 units not sold at the end of July 2011. Required: Determine the cost of goods at the end of the period, and the cost of sales according to 1. First in first out (FIFO) method 2. Incoming in first out first (LITO) method