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

Input:
The Olympus Charger does come with four 1600 mamp NiMH batteries (Not NiCd, which do not performa as well), and will work on both 100 and 240 volt outlets.  It will recharge at a slower rate and will take up to 3.5 hours to charge 4 batteries. But it does not have the same features as other smart chargers.
Consider the Quest 2 or Powerhaus smart chargers rather than this one.  The Quest 2 also comes with 4 x 1600 mamp NiMH rechargeable batteries. It has 4 microprocessors and can recharge any 4 batteries in any state within 2 hours. It will beep and flash at you when the the batteries are dead, and flash when the batteries are done charging and then trickle charge to prevent battery damage from overcharging. It also comes with a car charging cord for recharging in the car. The bad news is that this charger is more expensive and there are 1800mAmp batteries available.
The Powerhaus charger has 3 microprocessors and will also fast charge in 2 hrs, and trickle charge when done, but does not give you the visual or sound cues when the batteries are done or bad.  The Powerhaus also cannot charge 4 batteries in different charge states, as this will cause it to read the lowest charged battery and overcharge the other 3 batteries, shortening the battery lifespan.  The big plus is that it come with GreenBrothers new 1800 mamp batteries!!! The bad-est batteries around and will give you 15% more juice per charge than the 1600 batteries, at the same price as the Olympus charger set.

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