In a fabric manufacturing factory, the quality control process using control charts from SPC. In an hour there are a total of 5 samples are taken each having 4 observations regarding the thickness of fabric in measured in millimeters. In a particular hour, the sample means (X-bar) are noted to be 172.11,219.58, 208.24. 11244, and 123,30 respectively. In the same sample, the corresponding ranges are: 13.17, 13.38, 15.34, 13.04, and 13.02 respectively What are the lower and upper control limits for the chart? a. 0,30.99 O b. 0.29.17 OC 0,28.17 Od 0.31.47 O e 0.31.17 OL None is correct