Given That the National Institute for Occupational Safety and Health

Given that the National Institute for Occupational Safety and Health (NIOSH) has published numerous standards, what is the significance of the OSH Act's general-duty clause?

A) It is extremely significant, because NIOSH standards are for government workers only.
B) It is very significant, because NIOSH cannot anticipate all possible hazards.
C) It is somewhat significant, because companies may not understand the NIOSH standards.
D) It is slightly significant, because eventually the NIOSH standards may replace the general-duty clause.
E) It is not at all significant, because the NIOSH standards have taken the place of the general-duty clause.