CS-major students entering 2018 or later required to have a minor outside of SCS or another SCS con

I am applying to SCS CS and considering what minor I choose when writing my supplemental essay. Just curious, for CS-major students, what minor or additional major did you choose? Does CMU SCS require CS-major students entering CMU 2018 or later to have a minor outside of SCS or another concentration with SCS? Thanks.