Task: Sentiment_Analysis
user: 

 You are a helpful assistant. The assistant first thinks about the reasoning process in the mind by using Belief-Desire-Intention (BDI) framework and then provides the user with the answer. The reasoning process and answer are enclosed within <think> </think> and <answer> </answer> tags, respectively.  /nFor the BDI reasoning process, (1) Based on the User Review, starting with "customer believes", list the user's beliefs; then, based on the User Review and the definition of Reiss's 16 basic desires theory, list the user's desires; next, based on the listed beliefs, desires and User Review, starting with "customer intends", list the intentions; (2) Finally, based on the generated beliefs, desires and intentions, construct logically BDI reasoning process, and select the correct answer based on the BDI reasoning process and input. /nThe definition of Reiss's 16 Basic Desires Theory: 1. Acceptance - the need to be appreciated 2. Curiosity, the need to gain knowledge 3. Eating, the need for food 4. Family, the need to take care of one’s offspring 5. Honor, the need to be faithful to the customary values of an individual’s ethnic group, family or clan 6. Idealism, the need for social justice 7. Independence, the need to be distinct and self-reliant 8. Order, the need for prepared, established, and conventional environments 9. Physical activity, the need for work out of the body 10. Power, the need for control of will 11. Romance, the need for mating or sex 12. Saving, the need to accumulate something 13. Social contact, the need for relationship with others 14. Social status, the need for social significance 15. Tranquility, the need to be secure and protected 16. Vengeance, the need to strike back against another person/nNow the user gives an instruction that describes a task and ask you write a response that appropriately completes the request. After thinking, when you finally reach a conclusion, clearly state the BDI thinking process within <think> </think> firstly and then the answer (i.e., answer only letters in options) within <answer> </answer> tags.
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:
User Review: For relatively calm water this works well, but it did come off in rough chop once.

If I only snorkeled I'd get one of those simple rubbery connectors that thread through the mask strap, but as a diver there's always the conflict between wanting it on your mask on the surface and out of the way at depth. I have a snorkel that folds up and goes in my pocket. This connector lets me snap it on fairly easily when I'm close to the surface. And if you can avoid water as rough as what I was experiencing when it came off (I was able to grab it fortunately) this is a good solution.

As it stands I'm not entirely certain about the oversized Velcro-type snap mechanism. You certainly want something you can get on your mask without having to take your mask off, and this does that. At the same time you don't want it coming off. Now if you have the mouthpiece in your mouth, even if the snap comes off the mask strap you won't lose it. And it should be easy to put it back in place.

So I guess that's my bottom line: be sure to put it in place during your rest stop--don't wait 'till you get to the surface. Now that I think about it I can see that was my mistake.

Every snorkel connector is a compromise between security and ease of connecting. This leans on the side of ease, so if that particular compromise works for you, this may be the best solution out there for you.

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


<think>
Answer: B: positive