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:
Inflating this thing with the supplied "pump" is a joke.  I cannot imagine the company believes that this is an appropriate piece of equipment for the job.  If I could return this thing I would.  Shame on you guys for not figuring this out in a more satisfactory manner.

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