Multi-choice problem: Continue writing the next sentence in this paragraph:

How to get rid of a red eye 
Do your research on eye drops. 
There are many different types of eye drops, each one recommended for different circumstances. For example, if you have red eyes and wear contact lenses, a blood vessel constricting drop may not work.

Pick from:
[1]. If you are allergic to red eye, you may need a prescription to get rid of that symptom. Learn more about how apply eye drops to different situations.;
[2]. It wouldn't be able to get through the lens to treat your redness. Most eye drops work by constricting the blood vessels in the eyes.;
[3]. Not only will it put pressure on your eyes, but it could also cause distress. Latex eye drops help reduce inflammation.;
[4]. On the other hand, if your dark circles are severe, redness may be a concern. These factors determine what kind of drops you can take.;
[2].