Will NMSC accept multiple SAT scores?

I’ve previously taken the SAT and received a 2100 in one sitting. I plan to take it again this November (the latest date NMSC will allow) and score higher than before. Should I send my first score AND the November score - this way, if the November score sucks, I have a backup, my previous score. Is this allowed? Will NMSC accept both tests and just go with whichever is higher? Or will they just see my first score and ignore the later November score?

they will use the highest score taken by dec

@mom2collegekids Thanks! I haven’t found an answer to this anywhere else so I’ll just take your word for it.

See:

http://www.nationalmerit.org/Merit_R&I_Leaflet.pdf