Which Statement Best Captures Bee and Bjorklund's Review of Research

Which statement best captures Bee and Bjorklund's review of research on problem-solving and age?

A) The more related the practical problems are to the participant's age, the better they do solving the problems.
B) Younger adults do better than older adults on traditional problem-solving tasks.
C) Adults, until age 50, do better than adults in their 20s on practical problem-solving tasks.
D) All of the above describe their findings.