⟩ If the heart of a resting normal person is increased from 60 to 90 beats per minute by artificial atrial pacing
* a) Cardiac output will increase by at least 50%.
* b) Stroke volume will not be affected appreciably.
* c) Cardiac output will not be affected appreciably.
* d) Arterial pulse pressure will increase.
* e) Central venous pressure will increase.
Answer - c