Which of the Following Is a Limitation Associated with Covert

Which of the following is a limitation associated with covert participation?

A) Covert participants need to openly take notes or use obvious recording devices.
B) Covert participants must ask questions that will arouse suspicion.
C) Covert participants need to keep up the act at all times while in the setting under study.
D) Covert participants are unable to reveal their identities at the end of the research period.