128) Four samples of 100 each were taken from an assembly line, with the following results: Sam le Number | umber Defective _ __ Using the historical average as the central line of the chart, which one of the following is the limit for an attributes control chart with z = 2? A) UCL > 0.1 and LCL > 0.03 B) UCL > 0.1 and LCL 0.03 D) UCL