The correct answer is: SW refuses to transfer below market price so AL is forced to buy from the external market.
This action will result in dysfunctional behaviour as both divisions' actions are not in the interest of the company. Head Office intervention should resolve the problem in the short term.
Distractors:
SW refuses to sell SW+ to AL as there is unlimited demand for SW+ in the external market.
Since there is full autonomy, SW will want to satisfy external demand to maximise its profits and that of the group.
AL refuses to order from SW as it can buy SW+ from the open market at lower than current transfer price. As a result, SW sells all its units in open market.
No dysfunctional behaviour as both divisions' actions will maximise group profits.
SW agrees to sell to AL but has to cancel the sale in order to fulfill an urgent customer order, willing to pay a higher price for immediate delivery.
Since both divisions have autonomy in making buying and selling decisions, this short term action will not result in dysfunctional behaviour.