ATPL - An aircraft whose maximum approved seating configuration is 10 seats must be equipped with:

Question id 286 - Operational Procedures - ATPL - Airline Transport Pilot license

One hand fire-extinguisher in the cockpit/flight deck and two hand fire-extinguishers in the passengers compartment.

One hand fire-extinguisher in the cockpit/flight deck and one hand fire-extinguisher in the passengers compartment.

Two hand fire-extinguishers in the cockpit/flight deck and two hand fire-extinguishers in the passengers compartment.

Three hand fire-extinguishers in the passengers compartment.