According to Current Theory in the Quality Management Field, Should

According to current theory in the quality management field, should concurrent data collection or retrospective data collection be utilized?

A) Concurrent and retrospective data collection methods are both necessary in order to effect meaningful interventions and contain costs.
B) Concurrent data collection methods alone are meaningful because they emulate health practitioner training.
C) Concurrent data collection methods alone are meaningful because interventions must always be immediate.
D) Retrospective data collection methods alone are appropriate in the reimbursement realities of this decade.