阅读下列回答问题,在每小题提供的若干可选答案中,挑选一个正确答案。 【程序】 import java.util.Scanner; class Test{ public static void main(String[]args){ Scanner scan =new Scanner(System.in); double a[]={500,2000,5000,20000,40000,60000,80000,100000}; double b[]={5,10,15,20,25,30,35,40,45}; double c[]={0,25,125,375,1375,3375,6375,10375,15375}; int k=0; double x,y=0; x=scan.nextDouble(); x=x-2000; if (x>0){ while(k