From the process which fills boxes of granulated product, the weights of boxes are measured in consecutive subgroups of size n = 4. After collecting 40 subgroups the following summary statistics were calculated: X (with a double bar above it) = 1.15, and R (with a bar above it) = 0.03.. What are the lower and upper control limits for the X-Chart (X has a bar above it)?
A. 1.1011 and 1.1988
B. 1.0844 and 1.2156
C. 1.1063 and 1.1904
D. 1.1281 and 1.1718