Bramble Corp. has the following costs when producing 100000 units: Variable costs $600000 Fixed costs 900000 An outside supplier has offered to make the item at $4.50 a unit. If the decision is made to purchase the item outside, current production facilities could be leased to another company for $159000. The net increase (decrease) in the net income of accepting the supplier's offer is $864000, O $(9000). $309000. O $291000