Given a set of bonds for inventory with the following attributes: price, asset class, credit rating, and quantity such as [$60.46, Corporate, AA, 20]

Asset class: [corporate, sovereign, municipal]

Credit Rating: [AAA, AA, A, BBB, BB, B]

Given dealID and its total price such as (D1, $4000)

Given dealID and its min Asset Class Requirement such as D1, 20% Sovereign, D1, 60% Corporate

Given dealID and its min Credit Rating Requirement such as D1, 80% AAA, D1 20% AA

Allocate the bonds from inventory to satisfy the deals as much as possible so that you can minimize the bonds you borrowed.