What are the upper and lower control limits for the R chart (Given D4 = 1.777, D3 = 0.223) ?

Group of answer choices

A) UCLr = 9.48 mm, LCLr = 0.00 mm

B) UCLr = 8.76 mm, LCLr = 1.32 mm

C) UCLr = 5.84 mm, LCLr = 0.67 mm

D) UCLr = 7.96 mm, LCLr = 1.00 mm

John Doe works at Precision Brakes, a supplier to Honda. A critical dimension is the rotor diameter. John has taken 10 rotors per day for the past 5 days and measured them. The data from his samples are given in the table below: 156.9 153.2 153.6 155.5 156.6