Some of your sheep have started sneezing.  Additionally, some of the sheep have been shaking their heads and stamping their feet.  On physical exam, the affected sheep have serous-to-mucopurulent nasal discharge.  You bust out your flashlight (nerd) and spot this nasty little bugger wriggling in one of the sheep's nasal passages (see image).  You scream in disgust/ delight!

Which of the following is the identity of the parasite?
(A) Gasterophilus nasals
(B) Trichuris ovis
(C) Hypoderma ovis
(D) Oestrus ovis
(E) Dermatobia hominis

Bonus Question:
What is your treatment of choice? (Hint: Not Flonase)