well I got b in the end
regarding a though...im guessing it's the same ending you get if you don't hide the egg where the dog is..i.e Kronos leaves with it in hand..game over. Bit of a stupid hiding place, surely the conductor would notice it when he takes the dog back! also I wonder what happens if you stay in your apartment or you carry the egg with you all the time until you reach Vienna. Probably the same cutscene anyway right with Kronos leaving with it and end of game?
I dont think there is a losing scene for NOT giving the gold back to kronos is there? Unless it happens later? In fact now, if I rewind to the concert again I dont even get a chance to give him it back.