A few notes on "some" here:
*The usage in A is a somewhat rare idiom that is meant to emphasize a particularly large or impressive number (in inexact terms). "Some 15,000 people lined the streets for his funeral." It's not likely that you will encounter this much, and I wouldn't recommend using it in your own writing unless you are very familiar with the contexts in which it is used. I don't believe I've ever had occasion to use it myself! (The infinite complexity of language certainly keeps SC from running out of tricks, eh?)
*"Some" is used for countable things all the time! It is one of the "SANAM" pronouns (Some, Any, None, All, More/Most) that take their singular/plural nature from the nouns they describe.
*"Some" and "few" are completely different quantity words that don't have much to do with each other. There's no need to set them up as a binary choice. "Some" refers to any unspecified amount > 0. It doesn't have to refer to a small number. For instance, some people have two eyes! "Few" specifically refers to a small number (although notions of what a small number is will vary according to context and opinion), and it only applies to countable nouns.
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