Twiigs Is an Online Polling Website That Allows Users to Easily

Twiigs is an online polling website that allows users to easily create polls and to vote on polls created by other users. A March 2010 poll asked, "Has concern about autism influenced your decision about whether to vaccinate your child?" Of the 182 votes cast, 80% selected "No, I'm not worried about it."
What can you conclude from this poll?

A) The great majority of parents are not influenced by concerns about autism when vaccinating their child.
B) The great majority of parents who visit Twiigs.com are not influenced by concerns about autism when vaccinating their child.
C) Nothing further because the sample is not random
D) Nothing further because the sample is too small