When a technician uses a manifold gauge set to evacuate an air conditioning system what position should the technician position the hand valves in order to evacuate both sides of the system?

A. High pressure hand valve open and low press hand valve closed
B. High pressure hand valve closed and low pressure hand valve open
C. High pressure hand valve open and low pressure hand valve open
D. High pressure hand valve closed and low pressure hand valve closed


Answer: C

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