GMAT Critical Reasoning (CR) | Re: In the United States, the Postal Service has a monopoly on

So question for each one why another answer is wrong:

1. D, why is D not correct? If the cost is the same they won't be making more money than they currently are?

2. E, why is E not correct? The last sentence is saying all this stuff is based on the profits from the monopoly, so the assumption is that it will in fact have a monopoly?

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