1. d4 c6

does white have a move here thatr i have maybe overlooked?
if 2. e4
it becomes a Caro-Kann
which is what I want, as i love Caro-Kann games as black
if 2. c4
it becomes Slav
which is what I want, so it is the only opening i will have to remember as black against 1. d4
I personally hate 1. d4 games, but I am willing to try to play Slav
what would any of you consider besides e4 or c4?
pretty much no matter what, i'm gonna play pawn d5
need some help here, as 1. ... c6 is not in any opening book i have ever seen

Nf3 or e3 or Nc3 or Bf4... but c4 or e4 would be most common. I think most people play 1...d5 2...c6.

2. d5.