能实现将一维数据写入CSV文件中的是() A. fo = open("price2016bj.csv", "r") ls = ['AAA, 'BBB', 'CCC', 'DDD'] fo.write(",".join(ls)+"\n") fo.close() B. fo = open("price2016bj.csv", "w") ls = ['AAA, 'BBB', 'CCC', 'DDD'] fo.write(",".join(ls)+"\n") fo.close() C. fname = input("请输入要写入的文件:") fo = open(fname, "w+") ls = ['AAA, 'BBB', 'CCC', 'DDD'] for line in fo: print(line) fo.close() D. fr = open("price2016.csv", "w") ls = ['AAA, 'BBB', 'CCC', 'DDD'] for line in fo: line = line.replace("\n", " ") ls.append(line.split(",")) print(ls) fo.close()