Which answer matches this clue: the Cremona violin maker whose 17th-century instruments are the most prized and expensive in the world?

• A Giuseppe Guarneri
• B Antonio Stradivari ✓
• C Nicolò Amati
• D Carlo Bergonzi

Stradivari made roughly 1,100 instruments in his lifetime; about 650 survive today and his violins have sold at auction for over $15 million.