You Have a Very Sore Throat with Symptoms Indicating Strep

You have a very sore throat with symptoms indicating strep throat.Since you are taking microbiology right now,you decide that you will take a swab from your throat and swab it onto an enrichment medium like a blood agar plate or a brain-heart infusion agar plate.Why is this not a good idea?

A) Due to the fact that you cannot easily see the sampling site,there is a high probability that you will not be able to obtain your own specimen without contaminating the sample with your own normal biota.
B) You are on a diet now,and you are afraid that the food that you are eating will in some way impact the growth of the bacteria.As a result,you will not get valid results.
C) You use a mouthwash a couple of times a day,so you think that the antibacterial properties of the mouthwash will inhibit or kill the oral bactera,not giving you valid results.
D) All of these statements are correct.