以上代码输出的结果是?( )
ls1 = ['榴莲', '芒果', '椰子', '杨桃', '柠檬', '百香果', '橄榄', '木瓜']
ls1.append(['枇杷', '火龙果'])
print(ls1)['榴莲','芒果','椰子','杨桃','柠檬','百香果','橄榄','木瓜']
['榴莲','芒果','椰子','杨桃','柠檬','百香果','橄榄','木瓜',['枇杷','火龙果']]
['榴莲','芒果','椰子','杨桃','柠檬','百香果','橄榄','木瓜','枇杷','火龙果']
['榴莲','芒果','椰子','杨桃','柠檬','百香果','橄榄','木瓜','枇杷',['火龙果']]