The Primary Economic Explanation as to Why a World-Renowned Architect

The primary economic explanation as to why a world-renowned architect cannot attain the "superstar" status that an athlete or actor can attain is that

A) architects' services are not as highly valued by society as are the services of athletes and actors.
B) only physically attractive people can become superstars, and it would be a coincidence if a highly talented architect were also physically attractive.
C) government regulations place restrictions on the incomes of architects, but there are no such restrictions on the incomes of athletes or actors.
D) it is impossible for an architect to supply his or her services at low cost to every customer.