下面代码运行后,a、b、c、d四个变量的值,描述错误的是?
importcopy
a=[1,2,3,4,['a','b']]
b=a
c=copy.copy(a)
d=copy.deepcopy(a)
a.append(5)
a[4].append('c')
a== [1,2,3,4,['a','b','c'],5]$;$
b== [1,2,3,4,['a','b','c'],5]$;$
c== [1,2,3,4,['a','b','c']]$;$d
== [1,2,3,4,['a','b',‘c’]]
为啥选D呢?