During the compression stroke in a diesel engine compression of the air will have raised it's temperature to _______ and pressure in the range of _________.
a) 580-690 °C & 2800-4200 kPa
b) 540-650 °C & 3800-5200 kPa
c) 540-650 °C & 2800-4200 kPa
d) 640-720 °C & 3800-5200 kPa
Answer: c