16. The access to station’s paid area shall be allowed except which one? (1 Points).
a) A passenger who has a valid ticket.
b) A cleaner who supposes to sweep on a platform.
c) A staff who travel on his/her day off without a ticket.
d) A security guard who are required to perform his/her daily duties.
e) A person who has specific authorisation given by the MRTA or BMCL.