Can I opt out of rating adult content as a Search quality rater for RWS?

I’m on the onboarding/training process for becoming a Search Quality rater for Google’s Project Callisto, and on one of the training modules I just came across some guidelines for rating adult content. It honestly took me by surprise, especially since I’ve never done any other quality rater job before, and to be quite frank I just don’t wanna deal with that type of content as part of my job. Does anyone know if RWS allows you to filter or opt out of tasks related to this content?