How will you treat the following while estimating National Income?

How will you treat the following while estimating National Income? Give reasons for your answer.
(i) Capital gain on sale of a house.
(ii) Prize won in a lottery.
(iii) Interest on public debt.

(i) Capital gain on sale of a house is not included in the National Income estimation because it does not add to the flow of goods and services in the economy.
(ii) Prize won in a lottery is not included in National Income estimation because it is a part of transfer payments.
(iii) Interest on public debt is deemed as transfer payment. Hence, not. included in the estimation of National Income.