Almost all the $12,000$ workers of an automobile factory gastered outide the plant and relused to work for flive consecutive days. This strike, reflecting the union's cppositice to ste unfir clauses in the proposed unica coetract, began after negotiations ce the mandatory issue of increase in wages failed. The workers were initiating a$($m$)$:

a$.$ sympathy strike

b$.$ lowlowat

c$.$ slowdown

d$.$ jurisdictional strike

e$.$ economic strike