Expenses for District Office A of Tyler Oil Company amounted to $$35,000$ for the month of May. The field office has supervision over the following leases and wells:

$\backslash$table$[[$Lease$,\backslash$table$[[$Number of$],[$Wells$]],\backslash$table$[[$Barrels of Oil$],[$Prodced$]]],[$A$,1,1,000],[$B$,3,500],[$C$,4,2,000],[$D$,2,1,500],[$Total$,10,5,000]]$

A$).$ How much would each lease be charged if the District Office expense is allocated on the basis of the number of barels produced?

B$).$ How much would each lease be charged if the District Office expense is allocated on the basis of the number of wells supervised?