#include<iostream>
using namespace std;
int main() {

    int x;
    cin>>x;
	for(int j=1;j<=x;j++)
{	
	int c1,c2,c3,c4,n,m;
	int a[n],b[n];
	cin>>c1>>c2>>c3>>c4>>n>>m;
	for(int i =0;i<n;i++)
	{
		cin>>a[i];
	}
    for(int i=0;i<m;i++)
	{
		cin>>b[i];
	}
    //for exclusively rikshaw
	int sum1= 0;
	for(int i= 0;i<n;i++)
	{
      if(a[i]*c1>c2)
	  sum1 = sum1 + c2;
	  else
      sum1 = sum1 + a[i]*c1;
	  	}
     if(sum1>c3)
	 sum1 = c3;

	//for exclusively cabs
	int sum2 = 0;
	for(int i=0;i<m;i++)
	{

      if(b[i]*c1 > c2)
	  sum2 = sum2 + c2;
	  else
	  sum2 = sum2 + b[i]*c1;
	}
	if(sum2>c3)
	sum2 = c3;

	if(sum1 + sum2 > c4)
	cout<< c4 <<endl;
	else
	cout<< sum1 + sum2 <<endl;

	
	}



	return 0;
}