http://www.grinningplanet.com/2008/04-08/foam-cups-polystyrene-cups-article.htm
I would agree with you on that.
Yes, the correct answer is A - Styrofoam. Styrofoam is not recommended for serving drinks to children because it is made from a type of plastic called polystyrene, which can release potentially harmful chemicals when it comes into contact with hot liquids or acidic beverages. These chemicals are believed to be linked to health concerns such as hormone disruption and cancer. Therefore, it is best to avoid serving drinks to children in Styrofoam containers.
