22.运行下列程序,输出的结果是?( )
>>> a={1,2,3,4,5,6}
>>> b={4,5,6,7,8,9}
>>> print(a&b)
A. {1, 2, 3}
B. {4, 5, 6}
C. {7, 8, 9}
D. {1, 2, 3, 4, 5, 6, 7, 8, 9 }
22.运行下列程序,输出的结果是?( )
>>> a={1,2,3,4,5,6}
>>> b={4,5,6,7,8,9}
>>> print(a&b)
A. {1, 2, 3}
B. {4, 5, 6}
C. {7, 8, 9}
D. {1, 2, 3, 4, 5, 6, 7, 8, 9 }