Write the next sentence in this paragraph:

How to go to coimbatore from chennai by train
Book an unreserved ticket on the day of travel at chennai central railway station.
Find the correct train on the information board inside the station.
Only trains which go to coimbatore or to kerala state via coimbatore will stop at coimbatore junction.

Available choices:
(A). Give the train driver a bond ticket to someone who goes straight from kerala to coimbatore. Touch the tube which will take you to bracat that stops at kerala center.;
(B). After noting the train and the platform number, go to that platform and board the train. Before boarding the train, check the train number displayed on the coaches on yellow boards (eg.;
(C). Board an unreserved train at coimbatore junction. Board the train at coimbatore junction.;
(D). If you are planning to take another train, take the trains to kerala state railway station. Board the train at coimbatore junction.;
(B).