Instruction: Carefully assess the user's review for any strong expressions of sentiment, either positive or negative. Based on your analysis, select the most fitting sentiment option from the provided list as output.

Input:
I've owned this mug for about ten years now. The same one. Let me just say that it's the only travel mug I use. I've been thinking about retiring it and ordering a new one but I can't justify the cost. I mean, if I lose mine then I'd not hesitate to get another, but my TEN year old mug is just as good now as it was when I first got it. It's still keeping my coffee hot for hours and won't leak a drop. The mug has been everywhere with me, from mountain hikes to early morning fishing on the lake (I went ice fishing one time and left before my coffee got cold). I've also driven through three different vehicles and it fit each ones cup holders perfectly. I've dropped it on pavement and it just bounced without spilling a drop.

Any negatives I could mention about the mug would be that if you fill it with a hot beverage and seal it tightly and forget about it for quite awhile, the top will be vacuum sealed on. I did this one time and needed to use a pair of vise-grips to twist the top off. The cleaning is not too bad, I just wish it was a little wider, I have big hands and it's not easy to clean unless you use a bottle brush or a big wad of paper towels.

If you're thinking about buying this sight unseen, rest assured that this mug will prove its worth.

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