Which of the Following Is Not a Key Performance Indicator

Multiple Choice

Which of the following is not a key performance indicator (KPI) for measuring the quality of incoming goods and services? 

A)  The line reject rate due to inferior quality of components. 
B)  The cost related to quality inspection and auditing of incoming goods. 
C)  This is the percentage of the volume that has been ordered from contracted suppliers versus the total contract spend. 
D)  The number of credit notes to suppliers and the cost related to non-quality deliveries.