单选题

What&rsquos the value of the&nbsplen&nbsp...

Question

What’s the value of the len variable？（）

var array1 = [1, 2, 3, 4, 5]
var array2 = array1
array2.append(7)
var len = array1.count

A. 5

B. 6

C. 7

D. 0