The quality of a production process is monitored by an X-chart with UCL=33.3 and LCL=27.3 and an R-chart with UCL=7.0 and LCL=0.0. Which of the following samples of three items each would result in the process being classified as "out of control" (all limits and measurements are in pounds. UCL refers to the upper control limit of the chart, while LCL refers to the lower control limit of the chart)
Sample A: 35,29,34
Sample B: 34, 34,34
Sample C: 36, 31, 32
A. Only sample A is out of control
B: Only Sample B is out of control
C: Only Sample C is out of control
D: both Sample A and Sample B are out of control
E: all three samples are out of control