执行下列代码， 输出结果是？ （ ）
import numpy as np
x = [(1,2,3),(4,5,6),(8,9,0)]
a = np.asarray(x)
print (a)
[[1 2 3]
[4 5 6]
[8 9 0]]
[(1, 2, 3)
(4, 5, 6)
(8, 9, 0)]
[(1, 2, 3),
(4, 5, 6) ,
((1, 2, 3) (4, 5, 6) (8, 9, 0))