A lock-in agreement:

Select one:

a.

requires each union-represented bargaining unit covered by the agreement not to reach a final contract settlement until all unions covered by the agreement are willing to settle.

b.

is an agreement between unions.

c.

forces the employer to address the concerns of all bargaining units at the same time.

d.

has been ruled unlawful by the NLRB.

e.

all of these