This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharmacokinetics, Subject name: Pharmacology
Therapeutic index signifies? 
Select and explain. 
A. Potency, B. Toxic dose, C. Safety, D. Efficacy
C: Safety
Answer: C: Safety 
Explanation: Ans. (c) SafetyRef KDT 7/e, p 54/55