Read the text and determine if the sentence is true (see options at the end):

Felipe González Márquez (born March 5, 1942) is a Spanish socialist politician. He was the General Secretary of the Spanish Socialist Workers' Party (PSOE) from 1974 to 1997.

Sentence: The PSOE is the oldest political party in Spain.
Choose your answer from:
(A). Yes;
(B). It's impossible to say;
(C). No;
(B).