That they will need frequent checks of their liver enzymes
If you take a test in a health care setting, when it's time to take the test, a health care provider will take your sample (blood or oral fluid), and you may be able to wait for the results if it's a rapid HIV test. If the test comes back negative, and you haven't had an exposure for 3 months, you can be confident you're not infected with HIV.
If your HIV test result is positive, you may need to get a follow-up test to be sure you have HIV.
Your health care provider or counselor may talk with you about your risk factors, answer questions about your general health, and discuss next steps with you, especially if your result is positive.
HIV has become a very manageable disease with many only having to take one pill a day, but the virus is constantly evolving or mutating, so one has to be extra vigilant and take all medications according to compliance. The biggest failures in a therapy is non-compliance.
I would say it is A. Because they are going to comply with the new rules that were given, but are still being exposed to where children would want to smoke and be tempted. Plus, process of elimination. D. can't be it because it says nothing about cigarettes being stolen. C. can't be it either because a display case EXPOSES cigarettes. And B. can't be it because they are still being exposed to it.
Hope it helps.