Instruction: Assess the user's sentiment in the provided review and select the appropriate sentiment option from the list as the answer.

Input:
After using my Canon EF 100mm f/2.8L IS Macro lens for a year without this flash, I was pleasantly surprised at how many more successful photos I can get with it.  The flash enables me to use a fast shutter speed, small aperture and low ISO to freeze the movement of the petals when it is slightly windy outside. I can also use it handheld where I normally would only consider using a tripod.  I found though, that you don't want to take photos of reflective objects straight on because there will be a reflection of the flash in the photo of the objects.  If you shoot at an angle, however, the reflections won't show up. Also, if you shoot non-reflective objects, this isn't a consideration at all.  All in all, I am enjoying this flash.  It is easy to set up and easy to use at the default settings.  I haven't tried adjusting the lamps to flash at different ratios just yet, since it works so well at the default settings.

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