Which statement about using a portable fire extinguisher on an incipient stage fire is accurate? Select one: 

a. After the fire diminishes, move farther away to achieve final extinguishment. 

b. Liquid fuel fires should only be fought with one portable extinguisher at a time. 

c. Operating close to the fire can scatter solid fuel or penetrate the surface of liquid fuel. 

d. In order to stop the flow of the extinguishing agent, the pin must be put back in place.