Which of the following is an example of a flow variable?

PYQ SSC JE (Junior Engineer) 2022

1. A.

   Amount of capital goods employed in an economy on the first day of its financial year.

2. B.

   Money supply in a country on the first day of its financial year.

3. C.

   Export of food grains in a particular financial year.

4. D.

   Amount of food grains available in all warehouses of the country on the first day of its financial year.

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