Who photographed famous British scholars and wanted to make photography an art form in its own right?

Which tenth-century emperor wrote the two treatises On Ceremonies and On the Administration of the Empire?

A. Constantine VII Porphyrogenitus B. Maurice C. Alexius I Comnenus D. Otto I

Which Spanish painter created The Persistence of Memory, which features a melting clock?

A) ?Buñuel B) ?Goya C) ?Chagall D) ?Dalí