Italian Shoe Industry Has Become a World Leader Because of Intense

Italian shoe industry has become a world leader because of intense domestic competition among firms such as Bruno Magli and Rossimoda.According to Michael Porter's theory about national competitive advantage,Italy's success in the shoe industry is due in part to its

A) company strategy, structure, and rivalry.
B) absence of competition.
C) related and supporting industries.
D) factor conditions.
E) demand conditions.