When Steps Were Taken to Ensure That Participants Fully Understood

When steps were taken to ensure that participants fully understood the story, by making the category of a bank teller explicit, Tversky and Kahneman (1983) found that:

A) The conjunction fallacy disappeared statistically
B) The conjunction fallacy increased in magnitude
C) There remained a strong (though somewhat reduced) conjunction fallacy effect
D) People became more risk averse
E) People became more risk seeking