The number of persons which can be effectively supervised by a single executive or departmental head should be limited to ___ in an average firm.

The number of persons which can be effectively supervised by a single

1.	The number of persons which can be effectively supervised by a single executive or departmental head should be limited to ___ in an average firm.
A.	Six
B.	Ten
C.	Fourteen
D.	Twenty
Answer» B. Ten