Under Which of the Following Conditions Would You Recommend Ending

Under which of the following conditions would you recommend ending a cardiopulmonary exercise evaluation?
I.electrocardiogram indicating supraventricular tachycardia
II.10% fall from baseline oxyhemoglobin (HbO₂) saturation
III.fall in systolic blood pressure of more than 20 mm Hg
IV.request from the patient to terminate the test

A) II, III, and IV
B) I, II, and III
C) I, II, III, and IV
D) I, II, and IV