How Do the Idiographic and Nomothetic Approaches to Studying Personality

How do the idiographic and nomothetic approaches to studying personality differ?

A) The first focuses on the characteristics specific to given people, while the latter looks at similarities across people.
B) The first uses projective reports, while the latter employs case reports.
C) The first uses research methods, while the latter employs psychobiography.
D) They employ essentially the same methods but make different assumptions about personality dynamics.