When conducting interviews of staff, why should all levels of staff be included?

a.Junior staff members can see the failings of senior staff and will illustrate them plainly, offering insights into potential additional risk.

b.Senior staff members may have a broad business overview that junior staff may lack.

c.Junior staff members are likely to have an immediate knowledge of technology and working practices with which senior staff may be out of touch.

d.We do not include all levels of staff. Senior staff members are the ones who know how the business works, and they are the only ones who need to be consulted.

e.a&d only.

f.b&c only.