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

Input:
These work well- combining bands helps you add and reduce weight and the quality seems pretty good.  Some exercises are hard to accomplish because of the length of the straps, but that's not the fault of the manufacturer.  Longer or shorter would face their own downsides.  Great for travel.

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