以下对于列表的相关操作中哪些项有正确的输出结果？
A.＞＞＞ language = list('PHP'); ＞＞＞ language[1:] = 'ython'; ＞＞＞ print(language) ['P', 'y', 't', 'h', 'o', 'n']#B.＞＞＞ print(list('Life is short, you need Python.').count('is')) 1#C.＞＞＞ x = [2, 3, 0, 4, 1] ＞＞＞ x.sort() ＞＞＞ print(x) [0, 1, 2, 3, 4]#D.＞＞＞ words = ['Life', 'is', 'short', 'you', 'need', 'Python'] ＞＞＞ words.index('you') 4