They're both 'Cheese'. I contend that A is the proper answer. A is a Cheese Stick; raw cheese, uncooked. Also known as string cheese. B is Fried Cheese. It's been cooked, which requires additional identification.
A is String Cheese B is Cheese Stick I think this Google Search should be all the evidence you need: https://www.google.com/search?q=che...ved=0ahUKEwi7i4uD1qTKAhXHLmMKHcpSCIAQ_AUIBigB
not to be nit-picky but pasteurized cheese isn't raw... also, you cray. A is string cheese, B is cheese/mozzarella sticks (or "fried cheese/mozzarella")