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:
Shopped around trying to find sights that would fit my Springfield XDS, 9mm. Some reviews said the sights for the XD and XDM would fit so I took a chance. Meprolight sights are as good as any brand of Trigicon night sights and have the best price. They were very tight but I followed the instructions and filed them a little with a steel file. I then tapped them in with a brass punch and got them centered. Took the pistol to the range to verify sight picture. Everything was perfect so I put locktight inside the sight surfaces and now they will not move. Best sight for the money and great shipping. The sights really glow in the dark and are easy to view in daylight. If you have a Springfield and want to replace the sights it will take a hammer and steel punch to remove the factory installed ones or take it to a gunsmith and pay him.

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