It depends on the type of drug you mean, such as medicinal drugs like marijuana, or bad drugs like cocaine or heroine. But the best answer(in my opinion) is B.
Pepsin is an enzyme that is primarily involved in the digestion of the proteins in the steak.
To prevent a child from touching or sticking anything inside a plug-in, I would use guards to cover the holes. Smaller children have a difficult time trying to remove the guards, which gives enough time to notice him/her messing with the plug. Serious injuries, even death, can occur when being electrocuted. It is very important to prevent any small objects from being pushed into the sockets.
