To get personal income from national income, one must:

a$.$ subtract corporate profits and Social Security taxes, and add in transfer payments and other income.

b$.$ subtract retained earnings, corporate business taxes, and transfer payments, and add in Social Security taxes.

c$.$ subtract out corporate business taxes, Social Security taxes and transfer payments, and add in retained earnings.

d$.$ subtract out retained earnings, Social Security taxes, and transfer payments, and add in corporate business taxes.