Critical Reasoning (CR) | Re: Editorial: This year, the Marionville school board received five text

The confusion is between option C and D.
Though I do understand why option C could be the correct answer. I fail to understand why D cannot be correct one OR why C is better than D.
Here is my understanding of Option D -
Say, if the school had the option of accepting multiple proposals and yet they rejected all the proposal then that means they are acting negligently in accepting at least one of the proposal.
Now if the school did not have the option of accepting multiple proposals and rejected
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