Now let's see which of these are consistent. In general, students who didn't study at all got scores of about 15 on the test. Well, let's see, this is neither true, we don't see that these are the people who didn't study at all and they didn't get 15 on the test, and that's definitely not what this 15 implies. This doesn't say what the people who didn't study at all get. So this one is not true. That one is not true. Let's try this one.