When more than five variables are to be accessed ______________ design can be used.

When more than five variables are to be accessed ______________ desig

1.	When more than five variables are to be accessed ______________ design can be used.
A.	Stowe-Mayer
B.	Greasham-Inamine
C.	Bull-Hicks
D.	Plackett-Burman
Answer» E.