During the 1930s,the Civil Service Commission Operated Under a "Rule

During the 1930s,the Civil Service Commission operated under a "rule of three" by which

A) federal employers were required to interview at least three minority applicants for each open position.
B) federal employers could select a second- or third-ranked white candidate over a first-ranked black one.
C) federal employers could hire one new minority applicant for every three white workers already in service.
D) federal employers could fire minority workers without cause,as long as they retained at least three token minorities in their departments.