Instruction: Carefully assess the user's review for any strong expressions of sentiment, either positive or negative. Based on your analysis, select the most fitting sentiment option from the provided list as output.

Input:
Works great when new, but the batteries included just DOES NOT LAST (other reviews agree). I looked to see if they sell a lithium battery to fit this vac; what I found was an entirely new Eureka cordless (I believe in Eureka quality as I have a corded canister version 30 yrs and still working. The difference in price though is a lot more, $40 vs $155.

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