Casting off at the shoulders

I have finished front and back up to the cast off on this sweater. The pattern says to cast off 10 st’s at the begining of next two rows. Does this mean to be casting off on the purl rows? If this is so should I be casting off with purl st’s?


You can. It’s under the arm and you’ll be seaming so it’s not really a big deal.

[size=6][/size]Thank you :slight_smile: