Adler and Adler Report That Final Retirement or Exiting from Drug

Adler and Adler report that final retirement or exiting from drug dealing or smuggling is

A) difficult to establish due to career pattern of oscillation into and out of active drug trafficking: some may retire but many do not appear to do so.
B) fairly straightforward for many: they exit when the score the "Big deal."
C) is difficult task but done effectively by most by age 50.
D) occurs for most as they become older, especially over 55.