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

Input:
I have had this canner for about 20 years and it was far from new when I got it. I had always wanted a pressure canner, and doing research on them back then (before the internet) was not easy. I saw "pressure canner and jars for sale" in a local "Penny Saver" type of paper. I used it for several years before a friend of mine moved to a retirement community and gave me her pressure canner. That is when I learned that this ALL-AMERICAN is THE one to get. Hers has a gasket and I now know that oiling the gasket before I process a load of food helps, but there are actually times I have had to ask my husband to open it. I only use that non-ALL-American one when I have so much food to process that I need 2 canners. The ALL-AMERICAN is so safe, and so simple. Plus they continue to be thicker than many other pressure canners (compare the weight against the 23 qt. Presto for instance). If you are serious about canning then get this serious canner. And, you don't need to buy an enameled water bath canner if you have this because you can use it without pressure too--using steam, which is easier and safer than having to deal with a large pot of boiling water on top of a stove. (Instructions are included with the canner for using steam instead of water bath method - which is only for foods that are adequately acidic).

I also recommend getting the latest publication from the USDA for canning. [...]. The USDA has changed some of the times and pressures involved in safely canning food. The USDA has also recommended not using the 64 oz. (1/2 gallon) jars any longer as the temperature does not always reach all of the food canned in those large jars (which I personally loved). The also recommend acidifying all tomatoes because the newer varieties of tomatoes are less acidic than tomatoes used to be, etc.

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