The color is very deep and i have the same question i go to lvs
The painter might have chose tempura, fresco, or oil over encaustic to make the painting have a more realistic effect to it.
The accurate answer is
B.Shut off your engine
The reason is if you get confused this is the number one step you should do and it's the smartest. When you shut down your engine you can try to fix your problem. If you left your engine running you'd be giving your engine more energy and you don't want that
Glad to help :)