Final answer:
The correct answer depends on the specific tax system or financial regulations being referred to. In many tax systems, certain sections allow losses to be deducted against all sources of income, but without further specifics, it's impossible to determine the exact treatment of losses in the aggregating formula.
Step-by-step explanation:
The statement that describes the treatment of losses in the aggregating formula is somewhat ambiguous without additional context, such as a specific tax system or set of financial regulations. However, generally in many tax systems, losses can often be deducted for tax purposes. For instance, losses as described in sections of tax code like section 3(d) or section 3(b) can be used to offset income from other sources, depending on the rules of the particular tax jurisdiction. If this question is referencing such a system, either statement b or c might be applicable, where losses in a particular section are deductible against all sources of income. However, without the precise context or a reference to the actual sections of a specific tax code, the definitive accurate answer cannot be established. Therefore, further clarification from the student or additional details would be essential to provide a fully accurate response.