Nine Out of Every 10 Diamonds Sold in the World

Multiple Choice

Nine out of every 10 diamonds sold in the world pass through India,making diamonds that country's largest export at $6.6 billion a year.One of the reasons for its success is the nation's 2,500 trading firms,banks,airlines,customers' offices,and courier services that make sure the diamonds are safely delivered.According to Michael Porter's theory about national competitive advantage,India's success in the diamond 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.