Which of the following true of nonfinancial measures of quality?

A$)$ They assist in problem solving by comparing costs and benefits of different quality$-$improvement programs and by setting priorities for cost reduction.

B$)$ They direct attention to financial processes that help managers identify the precise problem areas that need improvement.

C$)$ They focus managers' attention on how poor quality affects operating income.

D$)$ They provide immediate short$-$run feedback on whether quality$-$improvement efforts are succeeding.