Reason (R) : They agreed with employers about work conditions.
(a) Assertion (A) and Reason (R) are true but Reason (R) is the correct explanation of Assertion (A).
(b) Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
(c) Assertion (A) is true but Reason (R) is false.
(d) Assertion (A) is false but Reason (R) is true.