Question on : 6 PP Master Data Material BOM

Which of the following objects you CANNOT assign to a "Material BOM" ?

I)   Material Master.
II)  Service Master.
III) Document from the DMS module.
IV) Class.
V)  Production Resource Tool.

A)   II, III, IV, V
B)   II, III, IV.
C)   II, IV, V.
D)   II, III, IV, V.
E)   II, V.
.