程序阅读题：当输入字符‘B’时，下面程序的输出结果是什么？#include int main(){char grade;scanf("%c",&grade);printf("Your score:");//提示switch(grade){case 'A': printf("95\n");break;case 'B': printf("85\n");break;case 'C': printf("75\n");break;case 'D': printf("<60\n"); break;default: printf("enter data error!\n");}return 0;}