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: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
User Review: This is one great camera.  Lots of features from higher end models.  Has most of the features a beg-int photographer will need.  The only feature I feel it needs is manual flash exposure controls.  But for the price you can't have everything, otherwise it would harm sales of Canon's intermediate SLRs.  It has a depth-of-field preview, which the Elan II doesn't have.  It's 7 point AF, 35 zone exposure matrix it's one of Canon's most advanced.  In fact, the latest Canon advance/intermediate SLR is based on it.  The camera is small.  So it is convenient to carry and also hard to hold on most hands.  This can be corrected by adding the battery pack.  I suggest you buy the rebel 2000 with the 28-105mm USM lens.  It will cost more than the 28-80mm setup, but the difference will be noticeable.  Plus, I would rather spend more money on a really good lens than an upgraded body. If you are able to spend more, go for the 28-135mm IS USM lens, which is canon's best non L-series lens.  If you need a flash, the 380EX it's the recommended one.

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


<think>
Answer: B: positive