Only One Answer.."ELEPHANT"

It was oral examination in the standard two. The class teacher asked various questions to the students. She asked Tom, ‘Can you tell me a name of an animal that starts with alphabet ‘E’? Tom replied ‘ELEPHANT’ Teacher asked him again to name an animal that starts with alphabet ‘T’. Tom replied ‘Two Elephants’ Teacher asked him the same question. Tom replied ‘Ten Elephants’ Annoyed teacher, asked him name an animal that starts with alphabet ‘M’ Tom replied ‘Mother Elephant’ The angry teacher repeated the same question. Cool Tom replied ‘May be an elephant’