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. 11.47, 16.55 O c. 18.55, 13.47 None is correct 11.44.20.66 O d. O e. Maha industries produces a product whose anticipated demand for the six periods is 263, 256, 301, 312, 304, and 294. If the firm has adopted level production strategy with a constant production of 280 units per period. The regular production cost is RO 12 per unit, whereas the overtime and subcontract costs are RO 20 and RO 25 per unit respectively. There is no limit on subcontracting; however, maximum overtime production capacity is 10. Average inventory holding cost is RO 5 per unit per period. What will be inventory level at the end of period 6? O a. 0 Ob 20 C. None is correct d. 41 e. 17