Compared to Hiring a White Worker, an Employer Is $5

Compared to hiring a white worker, an employer is $5 less happy when he hires a black worker and is $6 less happy when he hires a Hispanic worker. The firm faces hourly wage rates of $20 for whites, $16 for blacks, and $14 for Hispanics. Which of the following describes the firm's hiring decision?

A) The firm hires all white workers.
B) The firm hires all black workers.
C) The firm hires all Hispanic workers.
D) The firm hires a mixture of white and black workers.
E) The firm hires a mixture of white and Hispanic workers.