| Which of the following choices does not depict the tank inerting process on a tank vessel? |
| A) the introduction of inert gas into a gas free tank with the objective of reducing the oxygen content to below 8% by volume |
| B) the introduction of nitrogen gas into a tank with the objective of reducing the oxygen content to below 8% by volume |
| C) the introduction of inert gas into a cargo tank during cargo discharge operations to replace the volume of discharged cargo |
| D) the introduction of oxygen into a gas free tank prior to entry |
