Which of the following statements relating to the assessment of control risk is most correct?(I need more explanation about why the option is correct or wrong.)

A.If control risk is assessed as high, audit risk can be reduced to a sufficiently low level by reducing the level of inherent risk.

B.In the interests of efficiency, the auditor should be reasonably confident that test of controls will support an assessment of control risk of less than high.

Which of the following statements relating to audit testing ismost correct? (I need more explanation about why the option is correct or wrong.)

A.Substantive tests are not necessary when the risk of material misstatement is low.

B.If the auditor performs more substantive tests of transactions for an assertion about a class of transactions (e.g., Sales), they will likely be able to perform fewer substantive tests of balances for the related assertion about the associated account balance (e.g. Accounts Receivable).