Dear (said friend),
Hey, I hope your well, I know we haven't talked in a while so im sending his letter to "break the ice". I also wanted to tell you that I got a scholarship and im going to be doing study abroad in Paris! Im actually on the plane while im writing this so by the time you get this ill be sending you another postcard/letter of all the wonderful things im going to see and explore. Well I have to get off my plane now but let me know how youve been. Miss ya.
from (your name here)
A sentence, to be a sentence, must contain a subject and a verb. In A there is no subject, who/what is "receiving intravenous antibiotics"
The 3rd one because it has capitals and lowercase were it is neede
