下面代码的执行结果是:() ls = [“2020”, “20.20”, “Python”] ls.append(2020) ls.append([2020, “2020”])print(ls)
（A）[‘2020’, ‘20.20’, ‘Python’, 2020]
（B）[‘2020’, ‘20.20’, ‘Python’, 2020, [2020, ‘2020’]]
（C）[‘2020’, ‘20.20’, ‘Python’, 2020, [‘2020’]]
（D）[‘2020’, ‘20.20’, ‘Python’, 2020, 2020, ‘2020’]
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