In process industry during a daily production run, a total of five (05) samples are collected with four (04) observations within each sample. The sample means (X-bar) are; 14.09, 14.94,16.86, 18.77, and 16.64 respectively. The corresponding ranges are: 9.90, 7.73, 4.51,7.56, and 4.00 respectively. The lower and upper control limits of the x-bar chart are respectively O a. 11.34,21.18 O b. None is correct O c. 11.44, 20.66 O d. 11.47.16.55 18.55, 13.47 O e. SE NEXT PAGE Afresh food company in Oman is specialized in apples distribution in Oman. Annual sales forecast is 5400 boxes of apple. It costs OR 10 to make and receive an order and holding cost is OR 3.5 per box per year. The prices depend on quantities purchased such that the order quantities (in boxes) from 1 to 199 at a unit price RO 5: quantity 200 to 499 at a unit price 4.5 RO; and quantity 500 and more at a per unit price of 4 RO. If the discount option is considered, then the best order quantity that minimizes the total annual inventory cost is O a. 200 O b. 500 O c. 176 Od. None is correct O e. 199 NEXT PAGE CE