单选题

a数组中是一组升序的数，现由键盘输入一个待查的整数x,用二分法查找，若x存在输出其所在的位置,否则给出没找到信息。请将程序填充完整。#include <stdio.h>#define N 10void main(){ int i,x,low,high;int a[10]={25,28,37,44,65,76,79,83,85,92};scanf("%d",&n);low=0;high=9;scanf("%d",&x);while (low<=high){ mid=(low+high)/2;if(x<a[mid]) high=mid-1;if(x>a[mid]) low=mid+1;if (x==a[mid]) break;}if(______) printf("found,%d in position %d\n",n,mid);else printf("%d no found\n",n);}

Question

A. low<high

B. low<=high

C. low>high

D. low>=high