One drawback associated with internalization theory is that

a$.$ licensing has no major drawbacks as a strategy for exploiting foreign market opportunities.

b$.$ licensing may result in a firm giving away valuable technological know$-$how to a potential foreign competitor.

c$.$ licensing gives a firm tight control over manufacturing, marketing, and strategy in a foreign country.

d$.$ a problem with licensing arises when the firm's competitive advantage is based on its products rather than on the $m$