Instruction: Determine the sentiment expressed by the user in her review from the provided choices, and respond by selecting one of the available options.

Input:
good product, happy so far. the small emergency steam vent valve is suspicious as it is made from solid rubber, may be it is intentional to ensure this is being used appropriately and not over stuffed.

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