Which condition must be met before you attempt to use a fire extinguisher?
O The fire department has arrived on the scene
O The extinguisher must contain at least 50% water
O The building is being evacuated
O The fire is large but may be contained
O The fire department has arrived on the scene
O The extinguisher must contain at least 50% water
O The building is being evacuated
O The fire is large but may be contained