past perfect/past simple/present perfect

>><<So? No one but yourself is forcing you to read them. >>

Travis, what is your answer to the topic question? I can't find it.<<

The matter is that I was not responding to that at all, but rather was elaborating what Josh Lalonde had said:

>>When does English ever keep it simple? I wouldn't use this as a 'rule' in trying to learn English.<<

which itself was a response to superdavid's statement:

>>the common rule of the language : KISS
Keep It Short and Simple! <KISS>

(b) is the best answer because it is shortest and simplest.<<

which I myself strongly disagree with.

In less than one paragraph if possible, which answer do you think is "best" or more common, Travis?

They're all good to me - which one I would use probably would depend on the exact context and what I just felt like using at the time, even though I would still tend towards a) and c) for whatever reason.

<<They're all good to me - which one I would use probably would depend on the exact context and what I just felt like using at the time,>>

Can you tell us more about which contexts your choice would depend on?