Which of the following is correct?

A) Income is a stock concept, and wealth is a flow concept.
B) Both income and wealth are flow concepts.
C) Both income and wealth are stock concepts.
D) Income is a flow concept, and wealth is a stock concept.

Stock Concept

A financial term referring to the ownership of shares in a company or the total value of goods available in inventory.

Flow Concept

Economic measures that are defined over a period of time, such as income or expenditure, contrasted with stock concepts measured at a point in time.

Wealth

The accumulation of valuable financial assets and physical possessions which can be used to produce more income or sold for monetary value.