In Completing Wason's Four-Card Task,participants Usually ______

In completing Wason's four-card task,participants usually ______.

A) turn over the two cards that are necessary and sufficient to test the rule
B) turn over all four cards,when only two would have been sufficient
C) turn over all four cards,when only one would have been sufficient
D) show understanding of modus ponens but neglect modus tollens