Near the end of a long dinner shift that henri spent mostly at the grille, a fire erupted in the grille s grease trap and threatened to spread. henri knew that a grease fire needed special handling and his emergency training told him he must act fast. the hotel had installed new fire extinguishers only two months ago, and a new type designed especially for grease and oil fires was added in the kitchen. though several fire extinguishers were available to henri, only one would effectively extinguish this fire and keep it extinguished. which one must he choose?