Adjusting entries are

a$.$ optional under generally accepted accounting principles

b$.$ rarely needed in large companies

c$.$ needed to bring accounts up to date and match revenue and expense

d$.$ the same as correcting entries

The cash basis of accounting records revenues and expenses when the cash is exchanged while the accrual basis of accounting

a$.$ records revenues when they are earned and expenses when they are incurred

b$.$ records revenues and expenses when the company needs to apply for a loan

c$.$ records revenues when they are earned and expenses when they are paid

d$.$ records revenues when cash is received and expenses when they are incurred