Q: 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'.
Question: Corresponds to a gene mutation by transversion: 
 Options:  <1> T → C. <2> A → T. <3> G → A. <4> C → T. <5> A → G.
A:
2