Ross, Amabile, and Steinmetz Randomly Assigned Participants to Play the Part

Ross, Amabile, and Steinmetz randomly assigned participants to play the part of either a quiz game contestant or the questioner, while other participants merely observed the game. Results indicated that

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