What will happen to the workers if the machines are painted gray compared with orange？A．Wo

What will happen to the workers if the machines are painted gray compared with orange？

A．Workers may be more cheerful and energetic.

B．More errors and accidents will occur.

C．There is no difference at all.

D．They will be more active and curious.

请帮忙给出正确答案和分析，谢谢！

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