He thinks everyone's supposed to be mad.
`Oh, you can’t help that,’ said the Cat: `we’re all mad here. I’m mad. You’re mad.’
Answer:
The TGV is a high-speed train that operates all over France and beyond. Travel from romantic Paris to the shores of the Mediterranean or the vineyards of the Loire Valley. Visit cities such as Bordeaux, Lyon and Marseille or catch a movie in world-famous Cannes.
The international TGV services connect France with Belgium, Luxembourg, Germany, Italy and Spain. There’s also a service between France and Switzerland, operated by TGV Lyria.
Please do not take my word on this because i am no 100% sure but i think it is B because he is using a metaphor to compare his life to crystal stairs.
