Hmmm... i too am interested in the result. I had a great looking chunk of conglomerate from a mineralized zone around the Whipstick some years ago near where i got some prickly reef gold from. Size of a medicine ball it was and chunky alluvial's all through it, yum yum.
Took it home (was a cross between 2 & 4) and spent 4 days smashing, dollying, sieving and panning...... all for naught
I know it's "possible" to find gold in such conditions, it just hasn't been my good fortune to warrant bringing home every section of it i pass while hunting nuggets.
Mind you, i wouldn't be surprised to see #1 carrying some color as well. #3 to me would appear to be the least noteworthy in this instance.
Hope one of yours provides the fruit for ya AR, cos after all that work ya gonna need a cold one to either wash away the dust, or celebrate your fortune..
As to your query above... a combination of A & B
~EDIT~ I'm feeling the pins & needles in my hands now remembering "hand" dollying that bloody great wasteland of rock...& your setup looks similar to what i use, so thanks for going to the trouble.
Gypsy