Good catch, apologies. A is correct, it looks like the explanation for question 5 was incorrectly loaded here. I've notified the devs
Liamon November 5 at 10:46PM
This section of the practice test is awful, lots of explanations are incorrect or for the wrong question, so it is impossible to tell what is actually correct or not. Really surprised this hasn't been caught or corrected considering lots of other test takers noticed it as well. Really takes away from the experience on this site.