Who Is Most Likely to Be Optimistic About Cognitive Competencies

Who is most likely to be optimistic about cognitive competencies, ability to maintain memory, and other aspects of cognitive abilities regardless of actual age?

A) David, a man with a partner and two children who sees himself exactly at the age he is
B) Sharon, a 50-year-old woman who behaves like she is half her age
C) Andrea, a 50-year-old woman who has mobility problems and feels fragile
D) Mike, a man who is 45 years old but refuses to settle down and acts like a college student