Although the term ______ was construed in a case in 1915 as a ge

Although the term ______ was construed in a case in 1915 as a general concerned refusal by workmen to work in consequence of an alleged grievance，some of like acts by workmen were held in court to have been covered by this term.

A.strike

B.lockout

C.embargo

D.seizure

正确答案是A