According to the author, technical expertise obviously falls under the category of ______.

A．the relationship between emotional intelligence and cognitive competence
B．the differences between emotional competence and cognitive capacity
C．the importance of emotional intelligence skills in the making of an executive
D．the assessment of executives' ability to handle cognitive complexity

A．an exceptionally smart person
B．a person with highest possible cognitive intelligence
C．a person with highest emotional intelligence
D．a person who is smart enough to head a country