acca f1里有关fraud的问题
Which of the following internal controls might be least effective in preventing fraud,if staff are in
collusion with customers?
A Physical security
B Requiring signatures to confirm receipt of goods or services
C Sequential numbering of transaction documents
D Authorisation policies
这道题为什么选B?我认为B才是最有效的方法啊,为什么成了最没有效的.