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:
As with an earlier reviewer, I also placed two orders for a Pelican 1521 Replacement 3 Pc Pick 'N' Pluck Foam Set for the 1520 Case. Amazon Warehouse Deals got it wrong w/ the first order - sent me the foam for Pelican 1200 case. When I placed the second order, Amazon cancelled it "due to a lack of availability" even though it was still offered by Amazon Warehouse Deals on Amazon.com. Amazon needs to step up and take responsibility for its inept vendors - fill the order directly when the vendor can't.

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