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:
The 500ml is just the right size for tea drinking in the office. Bigger the tea will get cold before I finish one pot, smaller I will have to reload too often.
Btw, I really like the design that it won't drop out after pouring.

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