1 #include<bits/stdc++.h>
 2 using namespace std;
 3 typedef long long ll;
 4 const int N=1e5+10;
 5 ll a[N];
 6 int main(){
 7     int t ;
 8     cin>>t;
 9     while(t--){
10         int n;
11         ll k;
12         scanf("%d%lld",&n,&k);
13         for(int i=1;i<=n;i++) scanf("%lld",&a[i]);
14         sort(a+1,a+1+n);
15         int sum=0;
16         for(int i=n;i>=2;i--){
17             if(a[i]-a[i-1]>k) break;
18             sum++;
19         }
20         cout<<sum+1<<endl;
21     }