_Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm¬¨‚â§ .$?

_Pressure maintained in the high pressure primary tower of a three sta

1.	_Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm¬¨‚â§ .$?
A.	1.5
B.	3
C.	6
D.	12
Answer» C. 6