This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
True regarding tetanus toxoid is/are - 
Select and explain. 
A. Plain toxoid have long duration, B. Absorbed toxoid are more beneficial, C. Should never freeze, D. Stored at 0 oC
B: Absorbed toxoid are more beneficial
Answer: B: Absorbed toxoid are more beneficial 
Explanation: <p> Absorbed(purified tetanus toxoid) has largely supplemented plain toxoid because it stimulates a higher and long lasting immunity response than plain toxoid. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:312. <\p>