All actors are exuberant people and all ex
题型：单项选择题
问题：
All actors are exuberant people and all exuberant people are extroverts, but nevertheless it is true that some shy people are actors.
If the statements above are true, each of the following must also be true EXCEPT:
A．Some shy people are extroverts.
B．Some shy extroverts are not actors.
C．Some exuberant people who are actors are shy.
D．All people who are not extroverts are not actors.
E．(E) Some extroverts are shy.