In Greek mythology, Orthrus (Greek: Ὄρθρος , "Orthros") or Orthus (Greek: Ὄρθος , "Orthos") was, according to the mythographer Apollodorus, a two-headed dog who guarded Geryon's cattle and was killed by Heracles. He was the offspring of the monsters Echidna and Typhon, and the brother of Cerberus, who was also a multi-headed guard dog.
Does this next sentence follow, given the preceding text?
Cerberus was a dog.

OPTIONS:
 (A). Yes.
 (B). It's impossible to say.
 (C). No.
(A).