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:
Bought two of these.  Test them in the 'fridge and freezer for consistency.  Once I was satisfied, I split them up.  The one in the 'fridge is working fine.  The one in the freezer failed in a week.  The red fluid is across the entire scale and is separated in the middle (3 gaps).  I tried to heat it up in hot water to get the red fluid to re-join (and then cool it to start over), but the fluid doesn't seem to be moving at all.  It looks like only 1 of the 2 will be useful.  Disappointed.

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