A table displays production data for four manufacturing lines (Line P, Q, R, S), including their daily output, average defect rate (as a percentage of output), and daily operating cost. Which line has the lowest cost per non-defective unit produced?

✓ Correct Answer: Option B

To find the lowest cost per non-defective unit, calculate (Daily Operating Cost) / (Daily Output * (1 - Defect Rate)) for each line. The line with the lowest resulting value is the correct answer. This requires careful calculation and comparison.