单选题：x=[1,2,3,4], what is the value of x after executing the statemen

x=[1,2,3,4], what is the value of x after executing the statement x.append(5).
@[C](2)

A. [5,4,3,2,1]
B. 5
C. [1,2,3,4,5]
D. [5]



A.[5,4,3,2,1]
B.5
C.[1,2,3,4,5]
D.[5]


答案：C