Definition: 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: Question: The dehydrogenation of alkylbenzenes is not a convenient laboratory method, but it is used in an industrial way to convert ethylbenzene to: 
 Options:  <1> Cumeno <2> Toluene <3> Styrene <4> Phenol. <5> Naphthalene
