Read the following text carefully, Say True (T) or False (F) based on the text.

    Bikes are a form of land transport. They are designed to carry one or two rides accross land, roads, and paths. Today, many people also use them for recreation. Bikes have rubber wheels attached to a lightweight metal frame. All bikes have a powerful rotating chain, and some bikes have handlebars with compression brakes. 

    Handlebars are provided for the riders so that they can balance. Riders also use the handlebars to steer the bike in the direction that they want to go in. The seat at the back is needed in order for the rider to be able to sit down. Most seats are triangular in shape, and they are able to be moved up and down depending on how tall or short the rider is.

   Bikes have a lot of functions for people. Students or workers can commute from home to schools or offices riding on bikes. Messengers, police officers, postal carriers ride on bike to reach their destination. For people who love going to the mountain, riding a bike help them to go over rough terrain. Another function of bike is to help people exercise.

                    Source: http://twinkl.com.au/resource/au-t2-e-21222-bikes-information-report-writing-sample

The riders can adjust the seat with their body height.( ____ )