Researchers Randomly Assigned Participants to Play the Part of Either

Researchers randomly assigned participants to play the part of either a quiz game contestant or the host,while other participants merely observed the game.Results indicated that

A) both contestants and observers thought the hosts were more knowledgeable than the contestants.
B) both contestants and observers thought the contestants were more knowledgeable than the hosts.
C) observers thought the hosts were more knowledgeable,but contestants attributed the outcomes to the situation.
D) hosts thought themselves more knowledgeable,but contestants attributed the outcomes to the situation.