Which of the Following Students' Summaries About Metacognition and Problem

Which of the following students' summaries about metacognition and problem solving is the most accurate?

A) Delmer: "Our metacognitions are typically more accurate for insight problems than for noninsight problems."
B) Midori: "Students are not able to predict how well they are doing on a wide variety of problem-solving tasks."
C) Saundra: "On insight problems,our confidence increases suddenly; on noninsight problems,our confidence builds up gradually."
D) Steve: "Students typically have a feeling that they know the solution when they are several steps away from solving a problem-whether the problem is an insight problem or a noninsight problem."