The statement describes the government's process for fixing or revising minimum wages under Section 5, and the two conclusions each describe a different commencement scenario that the section covers.
Because the statute lays out both branches of the commencement rule side by side, both conclusions drawn from it hold true.
\[ \boxed{\text{Both Conclusions I and II follow}} \]A useful way to check statement-and-conclusion questions like this is to see whether each conclusion is an independent legal rule or merely an inference, and here both conclusions turn out to be direct restatements of the law.
Both conclusions describe two halves of the very same statutory rule, so both must be accepted together.
Hence, the correct answer is Both Conclusions I and II follow.