The Law of Supply posits a direct (positive) functional relationship between the market price of a good and the quantity producers are willing to supply (ceteris paribus): as price increases, profit margins expand, incentivizing producers to supply larger quantities.

In production economics, Total Cost ($TC$) is the sum of Total Fixed Costs ($TFC$, costs independent of output such as land, ponds, and buildings) and Total Variable Costs ($TVC$, costs varying with output such as feed, seed, fuel, and labor):

Economic contribution of fisheries to Indian GDP and Agricultural GVA:

• $2.1\%$ and $8.89\%$ exceed baseline official national accounting.
• $1.0\%$ and $4.78\%$ represent older data from a decade prior.
• In 2021–22, the fisheries sector contributed approximately $1.09\%$ (rounded to $1.1\%$) to the total National Gross Value Added (GVA) and approximately $6.72\%$ to the Agricultural GVA of India.
• $0.98\%$ and $5.36\%$ underestimate the economic share.

Mathematical formulation of Break-Even Point (BEP) in financial economics:
The Break-Even Point in units is the production or sales volume at which total revenue equals total costs, resulting in zero profit and zero loss:
$\text{BEP (in units)} = \frac{\text{Total Fixed Cost}}{\text{Contribution Margin per Unit}} = \frac{\text{Fixed Cost}}{P - \text{AVC}}$
Where Fixed Cost includes overhead expenses that do not vary with production volume (e.g., pond lease, depreciation, permanent salaries), and contribution margin per unit is Selling Price per unit ($P$) minus Average Variable Cost per unit ($\text{AVC}$).
Evaluating options:

• Capital cost refers to asset expenditure.
• Variable cost is subtracted from price in the denominator.
• Fixed cost is the exact numerator in the ratio.
• Product of costs has no financial meaning.