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

Input:
The remote control works well with my K20D camera. I was surprised that it was the Pentax brand, though the price was a fraction of what it cost at other sources.

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