D.
When my daughter was about 6 or 7 years old we got back to our apartment late on Christmas eve after making our family rounds. Our apartment was a disaster from the whirlwind of activity getting ready to go on those rounds. DD goes straight to bed. I stay up to "handle" some things. Next morning she wakes up, walks into the living room and exclaims "Mommy!, Santa cleaned our apartment!!!" Of course I responded "This is the best Christmas EVER!!"