The Therapist Asks the Patient at the Initial Evaluation to Describe

The therapist asks the patient at the initial evaluation to describe pain symptoms over the last 48 hours.The patient reports that pain has been decreasing slightly.At the next visit,the therapist asks the same question,and the patient reports that pain has remained the same since the last intervention.What might this indicate about the intervention?

A) The intervention was effective because it stopped the patient's pain.
B) The intervention was ineffective because it did not reduce the patient's pain.
C) The intervention was effective because it stabilized the patient's condition.
D) The intervention was ineffective because made the patient's pain worse.