Which is incorrect canonical structure

Which of the following statements are incorrect about canonical structures ? All canonical structures of a molecule :

Which of the following statements is correct for the most stable canonical structure of carbon monoxide ?

Which of the following statements is correct for the most stable canonical structure of carbon monoxide ?

Draw one canonical structure of CO_2 .

Which of the following is incorrect for stability of structures.

Draw one canonical structure of O_(2) .

The correct order of stability for the given canonical structures is :