None, as A Christmas Carol isn't written in chapters, it is written in Staves. There are five staves in 'A Christmas Carol' to mimic the fact that it is a Carol. The stave titles are below...
Stave I/Stave 1=Marley's Ghost
Stave II/Stave 2=The First of The Three Spirits
Stave III/Stave 3=The Second of The Three Spirits
Stave IV/Stave 4=The Last of The Three Spirits
Stave V/Stave 5=The End of it
Into staves which is what carols or music is divided into.
A carol.
a Christmas carol
A Turkey in Stave 5
carol
5 Second Movies - 2007 Doctor Who Christmas Carol 4-5 was released on: USA: 3 April 2011
All American Christmas Carol - 2013 was released on: USA: 5 November 2013
maybe because a chirstmas carol has to do with christmas .
The X Files - 1993 Christmas Carol 5-6 is rated/received certificates of: Argentina:13 USA:TV-14
MarzGurl Reviews - 2008 MarzGurl's Christmas in July An All Dogs Christmas Carol 5-4 was released on: USA: 13 July 2013
A Christmas Carol was the only name used by Dickens
The correct word in this case would be Christmas carol.