#include<stdio.h>
main()
{
int t,n,max,min,i,d;
scanf("%d",&t);
while(t--)
{
int count=0,k;
scanf("%d",&n);
int a[n];
scanf("%d",&a[0]);
max=a[0];
min=a[0];
for(i=1;i<n;i++)
{
scanf("%d",&a[i]);
if(a[i]>max)
max=a[i];
if(a[i]<min)
min=a[i];
}
//for(i=0;i<n;i++)
//printf("%d ",a[i]);
//printf("%d\n",max);
//printf("%d\n",min);
d=max-min;
int c[d+1];
for(i=0;i<d+1;i++)
c[i]=0;
for(i=0;i<n;i++)
c[a[i]-min]=c[a[i]-min]+1;
for(i=0;i<=d;i++)
//printf("%d ",c[i]);
count=c[0];
k=0;
for(i=1;i<=d;i++)
{
if(c[i]>count)
{
k=i;
count=c[i];
}
}
//printf("\n%d %d\n",k+min,count);
if(count > n/2)
printf("YES %d\n",k+min);
else
printf("NO\n");
}
}
 

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