In the context of the input sentence, determine the relationship between 'Dixons Carphone' and 'LONDON'.
Options: headquarters location, chief executive officer, developer, stock exchange

LONDON (ShareCast) - Decent gains from blue chips BP and Dixons Carphone (LSE: DC.L - news ) helped UK markets to rise on Thursday, bucking the negative trend seen across Europe as investors started to trim positions ahead of a pivotal weekend for Greece.
headquarters location