【单选题】

Which of the following is NOT true according to the passage
A．(A) White people can't be exempt from the troublesome social problems.

B．(B) If the assumption that ethnicity is the root of social problems proves to be wrong, many people might lose jobs.
C．(C) The large number of committees, commissions and task forces carried out their jobs on the basis of false assumption.
D．(D) The major task of the race-relations industry is to coordinate the relationships between the white and the ethnic minorities.