A Company Currently Has a Significantly Long Lead Time in Determining

A company currently has a significantly long lead time in determining the disposition of returned products. Which of the following non-procedural areas should the company look into as it performs a root cause analysis?

A) Financial department to see if the sales personnel are reluctant to charge the returns to sales
B) Quality department to see if the process for determining disposition is inefficient
C) Customer service department to see if they are taking a long time to address customer concerns
D) Material handling department to see if it is taking excessive time to handle defective product