Which of These Is Most Likely to Be True About

Which of these is most likely to be true about the process of introspection?

A) Introspection acts as a special window, allowing people to report correctly why they acted the way they did.
B) People often show little confidence about their reasoning when they introspect, although their reasoning is mostly correct.
C) People can often use their confidence ratings to detect whether their introspections are likely to be correct.
D) Introspection often produces mistaken beliefs that arise from plausible after-the-fact inferences.