I haven't read GEB (yet), but I'd say I do feel there's a difference between the original formulation of Lucas and the extensions that Penrose provide. At this stage I can't say whether I'd agree with Hofstadter or not on the rebuttal though.
As for the camps, I agree with you that B doesn't really make sense (at least to me). I can put myself in position to argue for A, C and D, but as mentioned in my original post so far I agree with C the most.
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I haven't read GEB (yet), but I'd say I do feel there's a difference between the original formulation of Lucas and the extensions that Penrose provide. At this stage I can't say whether I'd agree with Hofstadter or not on the rebuttal though.
As for the camps, I agree with you that B doesn't really make sense (at least to me). I can put myself in position to argue for A, C and D, but as mentioned in my original post so far I agree with C the most.