In the real world, the factors for production are not easily movables. For example, while capital from the USA can easily move to UAE, labor from UAE cannot easily move to the USA due to tough and sometimes cumbersome migration or visa approval policy. This creates a unique opportunity for international business expansion. Which of one the following theories represents the facts outline in this example?

a.International trade theory

b.Product cycle theory

c.Theory of competitive advantage

d.Imperfect markets theory