How To Identify if it is Cock or Hen (Murga or Murgi)?

Teacher Ne Class Mein Baccho Se Ek Question Puchha. Question: “How To Identify Murga Murgi?” Fadu Answer By Pappu The Great: “Patthar Maro Aur Dekho Agar, Bhaga To Murga, Aur Bhagi To Murgi.”