You will be given a definition of a task first, then some input of the task.
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: The covers of connective tissue that surround, protect and maintain the brain and spinal cord within the cranial cavity and the spinal canal are called meninges. Which of the following statements is correct?
Options: <1> The meninges are not made up of connective tissue. <2> The pia mater adheres to the brain and spinal cord. <3> The arachnoid is the thickest and most external. <4> The dura adheres to the inner surface of the arachnoid. <5> The meninges only cover the brain.
Output:
2