Which statement is true about syncing Rev captions?

Syncing start times should align within a second to the end of the sound heard, including speech and/or atmospherics.

Syncing start times should align within a half second to the start of speech. This applies to speech only, not atmospherics.

Syncing start times should align within half a second to the start of the sound. This applies to speech and atmospherics.

None of the above

Syncing start times should align within a half second to the start of speech. This applies to speech only, not atmospherics.