What Motivated Picasso to Create His Large-Scale Painting Guernica for the Spanish

What motivated Picasso to create his large-scale painting Guernica for the Spanish Pavilion at the 1938 Paris Exposition?

A) It was a celebration of Spain's technological innovations in the early twentieth century.
B) It was a response to the German bombing of a small Basque town, sponsored by Spanish Nationalists.
C) It memorialized the huge loss of life through trench warfare in World War I.
D) It was a modern version of traditional history painting recognizing Spanish accomplishments.