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

Input:
I purchased the cap to fit onto a Sigma 18-250 Macro lens.  The Nikon cap is much easier to use that the stock Sigma cap, and the springs have excellent return ... unlike the knock-offs.  And for the price including delivery, this cap is a bargain.

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