Which Information Given by a Patient Admitted with Chronic Stable

Which information given by a patient admitted with chronic stable angina will help the nurse confirm this diagnosis?

A) The patient rates the pain at a level 3 to 5 (0-10 scale) .
B) The patient states that the pain "wakes me up at night."
C) The patient indicates that the pain is resolved after taking one sublingual nitroglycerin tablet.
D) The patient says that the frequency of the pain has increased over the last few weeks.