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 is a great product, but the plastic disposable bags stretch and tear.  It's a little difficult to keep a constant pressure on the plastic bags.

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