| In accordance with the international MARPOL Annex VI regulations, what is a permissible alternative to burning oil residue sludge in an appropriate incinerator? |
| A) The oil sludge residue may be burned in a boiler OR engine, AND it may be burned only in unrestricted waters (other than in port, in harbors, or estuaries). |
| B) The oil sludge residue may be burned in a boiler OR engine, AND it may be burned without restriction in terms of vessel location. |
| C) The oil sludge residue may be burned in a boiler only AND may be burned only in unrestricted waters (other than in port, in harbors, or estuaries). |
| D) The oil sludge residue may be burned in a boiler only AND may be burned without restriction in terms of vessel location. |
