以下程序输出到文件 text.csv 里的结果是：

fo = open("text.csv",'w')

x = [90,87,93]

z = []

for y in x:

z.append(str(y))

fo.write(",".join(z))

fo.close()

• A. [90,87,93]
• B. 90,87,93
• C. ‘[90,87,93] ’
• D. ‘90,87,93 ’