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:
Socks are extremely important when you are hiking. Happy feet lead to happy hikes and socks are an investment in ensuring a happy hike. I wore these throughout my hikes of the Superstition Mountains and they kept my feet dry and blister free.

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