Instruction: Assess the user's sentiment in the provided review and select the appropriate sentiment option from the list as the answer.

Input:
Use this to power my electronic desk equipment, works well. The test; airing my HF electric sucking air compressor, with everything else plugged in. Didn't even phase the unit. Impressive.

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: A: very positive