Low-key lighting, influenced by film noir and music videos, became common because:

A. of the discovery and restoration of a pristine print of the long-lost Citizen Kane.
B. sensitive film stocks and highly powerful theater projection lamps could bring out details in shadow areas.
C. of deteriorating studio spaces and declining budgets for studio filmmaking.
D. of an influx of German émigré cinematographers working in Hollywood.

Answer: B