Which of the Following Statements About Participants' Right to Withdraw

Which of the following statements about participants' right to withdraw from research is FALSE?

A) If a participant decides to withdraw, it is permissible to gently encourage him or her to continue participating.
B) In research with children, it is important to be alert for nonverbal indicators of reluctance to continue participating.
C) Participants can withdraw from the entire study or can decline to provide specific pieces of information.
D) If participants are offered payment for taking part in a study, they must be paid even if they decide to withdraw.