Select the correct option to test your answer: A H 2 CO 3 - HCO 3 B H 2 CO 3 - CO 3 2- C CH 3 COOH - CH 3 COO - D NH 2 CONH 2 - NH 2 CONH + Correct Answer: Option A (H 2 CO 3 - HCO 3) Verified correct option for General Knowledge (GK) (Chemistry).