Do People Usually Think in Optimistic or Overly Ambitious Ways

Multiple Choice

Do people usually think in optimistic or overly ambitious ways when they are setting goals or when they are  striving to achieve goals?

A) Yes, they tend to be overly optimistic in both cases.
B) No, they tend to think in realistic ways in both cases.
C) They tend to be overly optimistic when setting goals but more or less realistic when pursuing goals.
D) They tend to be more or less realistic when setting goals but optimistic when pursuing goals.