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:
The only downside to this was that the batteries don't last very long and take a lot of time to recharge

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