The pressure (in kg/cm$$^2$$) and temperature (in $$^\circ $$C) at the end of compression stroke in a petrol engine are of the order of

A

4 to 6 and 200 to 250

B

6 to 12 and 250 to 300

C

12 to 20 and 350 to 450

D

20 to 30 and 450 to 500