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

Input:
Caution - the bottles leak!  I bought 2 of these fuelbelts for running - both bottles leak and drip on the back of my legs while running.  Belt itself is OK - but somewhat cheap construction/material.

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