According to the diamond model of Porter, which of the following refer to demand conditions?
A. The nature of raw material and other inputs that firms need in order to create goods and services
B. The extent to which firms' domestic suppliers and other complementary industries are helpful
C. The concept of firm strategy, structure, and rivalry refers to how challenging it is to survive domestic competition
D. The nature of domestic customers
E. The degree of challenge required to survive domestic competition
Answer: D. The nature of domestic customers