Animo Runs a Website That Allows Amateur Photographers to Post

Animo runs a website that allows amateur photographers to post photographs that they have taken for purposes of getting their work recognized and with the hope that others will see their works and purchase them for use in ad, textbooks, and other publications. Animo employees do not review the website, but they do remove photos when notified that a posted photo is not posted with permission and is copyrighted by someone other than the person who posted it. Applying the decisions from the Grokster and Viacom decisions, which of the following statements is correct?

A) Animo is liable for copyright infringement because it does not check its cite for possible violations.
B) Animo is liable for copyright infringement once it is notified of a problem, but does not take action.
C) Because Animo does not accept payment from photographers for the posting and cannot be liable for copyright infringement.
D) Animo is liable for copyright infringement only if the owner of the copyright notifies it of the infringement.