2/5 Bellagio: AA facing flop CR

[lippy]

(Posting this hand after discussing it with the friend, I am not the Hero, but will write like I am because it is easier)

Villain is kind of nitty. Makes some loose, bad calls preflop and doesn't really show aggression unless it's checked to him.

Stacks
Villain: 400
I cover


Villain limps UTG, a few limpers, I get AsAc OTB and make it $25, Villain calls, rest fold.

Flop
2d3x4d

Villain checks, I lead $40, Villain raises to $100, Hero ...?


Villains range in my eyes; 22-TT, AdXd, A5, 67dd and maybe 45.

Fold, call or shove (275 more)?