Instruction: Assess the user's sentiment in the provided review and select the appropriate sentiment option from the list as the answer.

Input:
I just received the product. TO MY SURPRISE, it does not have an electronic indicator that tells you when you need to change the filter. I thought I was buying the one with an indicator. I went on Amazon and realized that the video they posted on the product web page shows filters with indicator. I watched the video thinking that I bought the one with indicator. That was quite misleading! I hope they post video to the exact product in the future.

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