Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Artist | Album | Label | Credit |
| --- | --- | --- | --- | --- |
| 2001.0 | Newsong | The Christmas Shoes | Reunion | Guitar |
| 2002.0 | Plus One | Obvious | Reunion | Guitar |
| 2002.0 | Joy Williams | By Surprise | Reunion | Guitar, Bass, Bouzouki |
| 2002.0 | Plus One | Christmas | Reunion | Guitar |
| 2003.0 | Natalie Grant | Deeper Life | Curb | Guitar, Mandolin, Clappers |
| 2003.0 | Avalon | Testify to Love | Sparrow | Guitar |
| 2003.0 | Casting Crowns | Casting Crowns | Beach Street | Guitar |
| 2005.0 | Casting Crowns | Lifesong | Reunion | Guitar |
| 2006.0 | Ana Laura | Ana Laura | Reunion | Guitar, Piano, Keyboards, Vocals |
| 2006.0 | Red | End of Silence | Essential | Piano |
Question:
Who was the artist for the album, Christmas under the reunion label with the guitar?
Answer:
Plus One