The correct answer is D. all of the above.
In stand-alone revenue-allocation method, the weights can be selling prices, unit costs, or physical units. The weights are used to allocate the revenue from a product or service to the different departments or cost centers that contributed to its production.
Selling prices are the most common type of weight used in stand-alone revenue-allocation method. This is because selling prices reflect the market value of the product or service. Unit costs are another common type of weight used in stand-alone revenue-allocation method. This is because unit costs reflect the cost of producing the product or service. Physical units are less common type of weight used in stand-alone revenue-allocation method. This is because physical units do not reflect the market value or the cost of producing the product or service.
The choice of weights depends on the specific situation. For example, if the company is trying to maximize profit, then selling prices would be the best type of weight to use. If the company is trying to minimize cost, then unit costs would be the best type of weight to use. If the company is trying to maximize output, then physical units would be the best type of weight to use.