This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
Which of the following statement (s) is/are true about Hb/02 dissociation curve? 
Select and explain. 
A. Foetal Hb shift curve to left, B. Hypothermia shifts curve to left, C. Hypercarbia shifts curve to left, D. Acidosis shifts curve to left
B: Hypothermia shifts curve to left
Answer: B: Hypothermia shifts curve to left 
Explanation: A rise in temperature shifts the curve to the right so fall in temp. or hypothermia lead to shft to left PCO2 rises,(hypercarbia) the curve shifts to the right fall in pH (acidosis)shifts the curve to the right The fetal dissociation curve is shifted to the left due to high Hb content Ref: Ganong's Review of Medical Physiology Twenty-Third Edition Page No:611