You heard me before, and then again. afterward i die, until you call me again. what am i?

You are a echo. echos you hear once then they bounce off an object and then come back. and then there gone. unless you talk agian

You heard me before, and then again. Afterward I die, until you call me again. What am I?                                                                                                                                                                                                                                       The answer is "Echo"

Ithink its answer a)

That is super long dude