This is testing certification question .I think the ans will be B . Need your opinion
During an Audit , Auditor asked for evidences that the defect prevention activities are effective.Which of the below items which you will choose as evidence
a. defect trend chart for the last quarter
b. list of defects from last month and current month
c. defect density report for last months
d. control chart of defect trends with 8 months data