Which statement is false?

A) The concept of margin,or marginal is central to economic analysis.
B) Productivity is measured by output per unit of input.
C) MRP declines as more and more units of a factor are used.
D) None of the statements are false.

Margin

The difference between the cost of a product and its selling price, or the difference between any two indicators in finance.

Productivity

A measure of the efficiency of production, often quantified as the ratio of inputs to outputs in the creation of goods and services.

Economic Analysis

The systematic approach to determining the most efficient use of resources, which includes researching, analyzing, and applying economic theories and practices.