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:
I bought this bike rack at wal-mart for $39.99. It's ok for short trips but the longer I drive the more loose the straps become. I have to re-tighten them every stop. Also don't know if it's because of my car but the bikes sit really low. I'm afraid of damaging my bike when I come to dips in the road.

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