Collection from services not yet rendered to costumers are called? ___ income

Income already paid by the client even the corresponding services are not yet rendered is called?

The account found in the company's income statement are temporary account. True or False?

Which of the following is a permanent account?

- accrued service income

-service income

-Rent exprense

-rent income

In accrual principle of accounting, expenses are already recorded even it is not yet paid. Is it False?