[问道SC题]

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1、Although the manager agreed to a more flexible work schedule, he said that it must be posted on the bulletin board so that both management and labor will know what everyone is assigned to.
(A)   A。he said that it must be posted on the bulletin board so that both management and labor will know what everyone is
(B)   B。he said it had to be posted on the bulletin board so that both management and labor knows what everyone is
(C)   C。he said that they would have to post the assignments on the bulletin board so that both management and labor would know what everyone was
(D)  D。he said that the schedule would have to be posted on the bulletin board so that both management and labor would know what everyone was
E.saying that the schedule had to be posted on the bulletin board so that both management and labor would know what everyone had been

时态题，请高手解释下呗~~