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:
Unfortunately, this is an item that is not for the beach!  They kept loosing air and we were unable to keep them filled.  We had to throw them out.  Its the first time I have ever had to write a bad review.

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