Based on Personal Attributions of Their Success or Failure, Which

Based on personal attributions of their success or failure, which student is most likely to be motivated to choose more difficult academic tasks in the future?

A) Marla believes her failure in the chemistry lab was caused by her lack of preparation.
B) Duke said he didn't study for the algebra test. He said he's just good at math.
C) Camille said she made the highest grade because she was lucky enough to get the easier version of the test.
D) Stan thinks he failed the literature test because he is not capable of understanding poetry.