24. Which one of instructions for safety precautions described in the working manual is incorrect?(A) Install a fire extinguisher against a possible fire, and check how to use it.(B) Carrying out the actions to prevent a possible fire when fire or an accident has occurred.(C) Fix a safekeeping place for a first-aid kit, and install it there.(D) Establish a means of reporting to emergency medical institution such as an emergency hospital, and have its telephone number written down.