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

Input:
The item in the picture is a model 9840, with a manual on/off switch.  I have had one for years and love it.  I just keep replacing the batteries.

However, as of 2011, the item that was received is the model 9840N.  The 9840N has two digital switches, one for on/off and other for Celcius/Fahrenheit.  The problem is that these new thermometers don't work well because of defects.  They look similar to the one below, but come in black.

<a data-hook="product-link-linked" class="a-link-normal" href="/Taylor-9842-Commercial-Waterproof-Digital-Thermometer/dp/B00009WE45/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Taylor 9842 Commercial Waterproof Digital Thermometer</a>

Since these thermometers (both the model 9840 and 9842) have been around a long time, I would suggest that you read the most recent reviews to determine quality, because of apparent changes in manufacturing, and not rely on older reviews.

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