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

Input:
Bought one of these at Wal-Mart.  I had a 15 day return period.  13 days into it with only one book read, the bottom half of the screen went black and unresponsive.  So I took it back, bought anohter one of the same.  Two days into it, it started acting glitchy.  I love the style and concept of the Nook as well as the size and feel, but seriously, they need to fix it so you can read more than one book on it before it goes out!

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