challenge: Where is the plaque dedicated to Giuseppe Alberganti located?
  
  A. Via Val di Ledro 23 in the historic district of Niguarda in Rome
  B. Piazza del Duomo in the historic district of Niguarda in Florence
  C. Via Val di Ledro 23 in the historic district of Niguarda in Milan
  D. Via Montenapoleone in the historic district of Brera in Milan
  Answer: 