Question no : 4 PP MRP Logic

When will the system flag the "NETCH" indicator for a material master with strategy group 40 ?
(demands = planned independent requirements)

I)   New demands are introduced within the planning horizon.
II)  New demands are introduced outside the planning horizon.
III) The lot size key in the MRP 1 view is changed.
IV) The material status in the MRP 1 view is selected for MRP activation.
V)  Previous demands are removed from the planning horizon.

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