#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;
}
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