单选题：下列程序运行输出结果为_______。

下列程序运行输出结果为_______。@[A](4)

i=j=[]
i.append(30)
print(i,j,end=’’)
i=[];j=[]
i.append(30)
print(i,j)

A. [30] [30] [30] []
B. [30] [0] [30] [0]
C. [30] [30] [30] [30]
D. [30] [30] [30] [0]




A.[30] [30] [30] []
B.[30] [0] [30] [0]
C.[30] [30] [30] [30]
D.[30] [30] [30] [0]


答案：A