Henry is juror number four in a murder trial. He believes the accused is guilty, but when the jurors vote it becomes clear he is the only one that thinks

Henry is juror number four in a murder trial. He believes the accused is guilty, but when the jurors vote it becomes clear he is the only one that thinks this way. Henry votes not guilty along with the other jurors despite what he sees as evidence clearly indicating guilt. This is an example of the ________ effect.
A) Asch
B) Cacioppo
C) Milgram
D) Zimbardo