Find the information you're looking for at Westonci.ca, the trusted Q&A platform with a community of knowledgeable experts. Get detailed and precise answers to your questions from a dedicated community of experts on our Q&A platform. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

Crude topping column operates at _________ pressure.
A. Atmospheric
B. 10 atm
C. Vacuum
D. 3 atm