It's a previously unreleased test. Those are labelled as A, B, C, and C2. (It's officially PTC in the latest SuperPrep book. 7Sage labels it as C2 to avoid confusion.)
Check out your LSAC account,there is a message from Ms. Testy, the CEO of LSAC, scores for the Feb. 10th LSAT will be released tonight 3/6/18, starting in about 10 minutes. God bless.