Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
This is the third unit that I have purchased. The first unit lasted several years. The last two units have broken within a few weeks of purchasing. The manufacturer has changed the diameter of the pushrod holding the filter and it is so flimsy that it just breaks in two. They also don't appear to be readily available as they are not listed on Amazon with the accessory items or with replacement filters. Never again.

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