Digital Enterprises,Inc

Digital Enterprises,Inc.,a data analysis firm,wants to hire Ernesto,a noncitizen.A work visa is most likely to be set aside for a noncitizen if 

A)  ​the noncitizen is of "ethnic similarity to the employer's workforce." 
B)  ​there is a shortage of qualified U.S. workers capable of doing the work. 
C)  ​bringing the worker into this country will adversely affect the labor force. 
D)  ​the noncitizen is a "person with an extraordinary work ethic."