A17842. 将学生基本信息['李明','155cm','35kg','男']写入xinxi.csv文件，以下哪项Python代码是正确的？（ ）

xx=open('xinxi.csv','w') 
x1=['李明','155cm','35kg','男'] 
xx.write(','.join(x1)+'\n') 
xx.close()

xx=open('xinxi.csv','w') 
x1=['李明','155cm','35kg','男'] 
xx.append(','.join(x1)+'\n')
xx.close()

xx=open('xinxi.csv','w') 
x1=['李明','155cm','35kg','男'] 
xx.read(','.join(x1)+'\n') 
xx.close()

xx=open('xinxi.csv','w')
x1=['李明','155cm','35kg','男'] 
xx.insert(','.join(x1)+'\n') 
xx.close()