In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Input: Consider Input: Question: The CD40 ligand molecule (CD40L or CD154) is expressed in: 
 Options:  <1> Virgin T lymphocytes. <2> Activated T lymphocytes <3> NK lymphocytes. <4> Virgin B lymphocytes. <5> B activated lymphocytes.

Output: 2


Input: Consider Input: Question: Among the strategies of Emotional Regulation, which of the following would be an acceptance strategy within cognitive-behavioral therapies? 
 Options:  <1> Distraction. <2> Behavioral Activation <3> Exposure with Prevention of Response. <4> Emotional Expression Adjusted. <5> Emotional Inhibition.

Output: 4


Input: Consider Input: Question: Cognitive techniques do not seem to enhance the effect of exposure in vivo in most specific phobias, with the possible exception of: 
 Options:  <1> The claustrophobia and the phobia of heights. <2> Phobia to the dark. <3> Water phobia <4> Phobia to drive. <5> Phobia to the snakes.


Output: 1