A. Speed up to beat the fire truck.
You are about to make a right hand turn at this intersection. You have the green light. You hear a siren and then see that a fire truck will soon overtake you. You should:
A. Speed up to beat the fire truck.
B. Stop and let the fire truck overtake you.
C. Continue and make the turn because you have the right of way.

A fire engine is a heavy vehicle that responds to emergencies. As they are much larger than cars, they have a longer stopping distance, and are less manoeuvrable in traffic.
If you want to know what it's like to be in a fire truck on the way to a call, this video from Fire & Rescue NSW shows you, including good views of travelling behind vehicles and passing through intersections.
For more about emergency vehicle sirens click here.