Question no : 23 MM Purchasing with Account Assignment

When will creating the Purchasing Order forces the user to enter an account assignment ?

I)   When the user insist to enter the PO without a material master.
II)  When the material master entered in the PO is of material type "UNBW".
III) When the material master entered in the PO is of material type "NLAG".
IV) When the item category entered in the PO is of item category "D".
V)   When the document type entered is of "UB".

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