During the Intake Interview,the Nurse Notices That,although the Patient Denies

During the intake interview,the nurse notices that,although the patient denies pain,he is grimacing and holding his hand over his stomach.The nurse's best approach would be to:

A) examine the history closely for etiology of pain.
B) question the patient about having feelings of pain.
C) record that patient denies pain but seems to be having abdominal discomfort.
D) physically examine the patient's abdomen.