Which of the following are included in GDP?Explain why or why not.

a.A drug dealer sells heroin to a customer for $100.

b.A plumber fixes your leaky toilet for $200.You pay in cash, and he doesn't include the payment in his income tax return.

c.You raise chickens in your backyard, then eat them.

d.You raise chickens and sell them to your neighbors but don't pay tax on the income.

e.You sell your used car to your neighbor, who pays sales tax when she registers the car to get license plates.