Act5743-please help with explanation

1)Analytical procedures used in planning an audit should focus on

a)Assessing the adequacy of the available evidential matter

b)Assessing business risk

c)Providing assurance that potential material misstatements will be identified

d)None of the above

2)The main source of sampling risk is

a)Auditor error

b)Poor client controls

c)A non-representative sample

d)Inherent risk assessed too high