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'.
Q: Question: Which of the following statements about Parkinson's disease is true?
Options: <1> The disease begins with obvious manifestations that guide the doctor to formulate the definitive diagnosis. <2> The disease is a neurological disorder characterized by tremor, rigidity and bradykinesia. <3> In the beginning, patients walk more and more slowly. <4> Flaccidity, associated with motor dysfunction, is bilateral. <5> In advanced stages, the patient presents lordosis.
A:
2