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 number of signals in the 13 C NMR spectrum of cis-1,2 dimethylcyclopentane with proton decoupling is: 
 Options:  <1> Three. <2> Four. <3> Five. <4> Six. <5> Seven.
