Villain is 27/5/0.5 over only 30 hands, i havnt been in any pots with him before, and he hasnt done anything notable. Should I c/c river or b/f river? As played, can I fold to this river raise?

$0.1/$0.25 No Limit Holdem
5 players
Converted at weaktight.com

Stacks:
UTG flamadis ($33.35)
CO huffman56 ($16.15)
BTN Omed2244 ($12.15)
SB slatx ($37.55)
BB Hero ($34.30)

Pre-flop: ($0.35, 5 players) Hero is BB
1 fold, huffman56 calls $0.25, 1 fold, slatx calls $0.15, Hero checks

Flop: ($0.75, 3 players)
slatx checks, Hero bets $0.75, huffman56 calls $0.75, slatx folds

Turn: ($2.25, 2 players)
Hero bets $1.75, huffman56 calls $1.75

River: ($5.75, 2 players)
Hero bets $4, huffman56 raises to $8.25, Hero calls $4.25

Cheers guys.