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:
This ball is not round.  It inflates to an egg shape with a slight constriction around the middle.  It makes for a unique and challenging, and often fun game of FourSquare, but really, a playground ball ought to be round!

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