NL Hold Em $.5/$1 (6-Max)

Stack Sizes:

Everyone ($100)

Hero has [Ks Qs] on the BB. SB posts a blind of $0.50. Hero posts a blind of $1.00.

UTG raises to $3.50, DB calls $3.50, SB calls, Hero calls $3.50.

Hero calls $3.50. 4 players, pot is $14.

Flop: [Kc Ah 9h] SB Checks, Hero Checks, UTG Checks, DB Checks.

Turn: [ 8c ] SB Checks, Hero bets $11, UTG folds, DB calls, SB folds.

River [ 2s ]. Hero ?

Question 3:

Which is/are the bad play(s) here?

    I. Hero Checks (with the intention to call up to a pot sized bet).

    II. Hero Checks (with the intention of folding to a bet).

    III. Hero Bets $12.

    IV. Hero Bets $36.

A) I only.

B) II and III.

C) I and IV.

D) III and IV.

E) II and IV.