One of the hardest yet most helpful practices during Blind Review is to create your own analogous arguments. Consider the following analogy which should demonstrate the issue of smuggling facts of the world which you believe into other people's minds.
Oranges contain vitamin C which is an essential vitamin. (This is a fact. You just read it so even if you didn't already believe it before, you certainly believe it now.)
Many people criticize oranges because they believe that the fruit has no health benefits. These same people believe that vitamin C has health benefits.
Here's the entire content of those people's beliefs:
b1 - Oranges have no health benefits.
b2 - Vitamin C has health benefits.
Can we say that these people hold contradictory beliefs about oranges? No, we cannot. Look again at b1 and b2. There is no contradiction. You're tempted to say yes because you know that oranges contain vitamin C and you think to yourself surely they must believe this too. This is the trap that (A) lays out.
But, what we can say for sure is that these people's b1 is just wrong. They're just wrong about oranges' health benefits. Because b1 contradicts a fact of the world. This is (C), the correct answer.