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:
I am hanging a 70lb bag on this spring, and it seems to be the correct spring rate for about 70-100 lbs. It greatly reduces the shock through the framing of my house.

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