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 cach having observations regarding the thickness of fabric in measured in millimeters. In a particular hour, the sample means(bar) are noted to be 156.46, 199.62, 189.31, 10222 and 112.09 respectively. In the same sample, the corresponding ranges are: 11.97, 12.17, 13.94, 11.86, and 11.83 respectively. What are the lower and upper control limits for the R chart O a 0,30.07 Ob 0,25.12 Oc 0.26.07 Od 0.28.17 Oc. None is correct of 0.29.17 Control Chart Table Sample Size Factor for x-Chart Factors for R.Chart A2 D3 D4 Confidence level % z-value 3 188 102 0.73 0.58 0.48 0.42 0.37 034 165 196 205 2.17 233 258 97 98 6 0.00 0.00 0.00 0.00 0.00 0.08 0.14 0.18 0.22 0.26 0.28 031 0.33 0.35 327 257 228 2.11 200 192 186 1.82 1.78 1.74 172 169 1.67 165 10 031 029 12 0.27 025 14 15 024 022