Which of the following is an example of a failure to adopt the appropriate "character" during surveillance?
A. An unknown person claiming to be a maintenance worker who has no tools or equipment and is dressed inappropriately.
B. An unknown person claiming to be a courier who has a clipboard and large padded envelope.
C. An unknown person claiming to be a cleaning service employee who is pushing a wheeled trash bin and wearing casual clothing.
D. An unknown person claiming to be attending an office meeting who is wearing a business suit and has a briefcase.