以下选项中，无法成功写入内容的是

A. fid = open("test1.txt","ab")fid.writelines( ['a', 'b', 'c'] )fid.close()
B. fid = open("test2.txt","w")fid.writelines( ['a', 'b', 'c'] )fid.close()
C. fid = open("test3.txt","a")fid.writelines( ['1', '2', '3'] )fid.close()
D. fid = open("test4.txt","w")fid.writelines( [1, 2, 3] )fid.close()