#include<iostream>
#include<cstdio>
#include<cmath>
#include<vector>
#include<algorithm>
#include<iterator>
using namespace std;
int main()
{
    int t,a,b,c,p,num;
    cin>>t;
    vector<int>v;
    for(int i=0;i<t;t++){
        cin>>a>>b>>c;
        int ara[c];
        for(int m=0;m<c;m++){cin>>ara[m];
    }
    vector<int>vect(ara,ara+c);
    vector<int>iterator it;
    sort(vect.begin(),vect.end());
    cin>>num;
     it=find(vect.begin(),vect.end(),num);
    if(it!=vect.end())
    cout<<it-vect.begin()+1<<"\n";
    else cout<<"NO\n";
    }
}