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

Input:
I have had this for a number of years and am not particularly pleased with it.  I love OXO products and use them at every opportunity.  The clam does not stay open so you are forced to touch the clam in order to open it to replace the brush.  Kind of defeats the purpose and is not hygienic.  Also, the design of the brush head does not allow it to reach the hard to reach places.  One day it will be replaced.

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