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

Input:
There seems to be some conflicting information about using this headset with the iPhone among the existing reviews. For the record, the jack on this headset is not the right size for use with the iPhone 4.

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