Choose from options: Determine if the sentence is true based on the text below:
It should be easy to move the chair's seat up or down.

How to choose an ergonomic office chair<br>Look for the ability to adjust the chair's height. The height of your ergonomic chair should be fully adjustable. The chair's seat should be easy to move either upwards or downwards.
Available options:
 (a). Yes.
 (b). It's impossible to say.
 (c). No.