Where can you get Earthquake in Pokemon White?

Question

Or who can learn it out of my Pokemon:
Samurott
Zekrom
Virizion
Cobalion
Emolga
Sawsbuck

Answer 1

Already asked http://pokemondb.net/pokebase/23170/where-are-the-tms-earthquake-and-stone-edge-in-white

Answer 2

TM26 (earthquake) is situated in the relic castle in B/W.

Answer 3

GameBeater is right, and no-one of your pokemon can learn the TM. Sorry...