Instruction: Determine the sentiment expressed by the user in her review from the provided choices, and respond by selecting one of the available options.

Input:
The brackets work as expected and are easy to assemble.  I am a little concerned that, after several years of direct contact with the ground, corrosion will be a problem.

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