Two months after Edvard Munch’s mesmerizing pastel “The Scream” sold at auction for $120 million, the Wall Street Journal has identified its anonymous buyer as NYC financier Leon Black, citing several sources close to the art collector. But where will he hang it? Black sits on the boards of both the Metropolitan Museum of Art and the Museum of Modern Art. Tough competition there — maybe he’ll just have to keep it at home. Though the Norwegian artist created four versions of “The Scream,” the others are all in Oslo museums.