In the Presence of Which of the Following Factors Should

In the presence of which of the following factors should the optimal span of control be wide?

A) The work is not clearly defined and instructions are ambiguous.
B) Subordinates are poorly trained and have limited access to information.
C) The manager has recently taken up his post.
D) Jobs are similar, and performance measures are comparable.
E) Subordinates prefer close supervisory control to autonomy.