I chose an. how do you guys pronounce URL anyways? English is my 2nd language so im not very good at it. but for me I pronounce it like i pronounce letter U and then R and then L. U-R-L.
Edit: nvm, i just notice that U sounds like YU or the word YOU. so yea i probably chose the wrong answer

sorry. I agree with John
this proves how bad my English is -_-