In MRP Record Calculations, the Appearance of a Negative Value

Multiple Choice

In MRP record calculations, the appearance of a negative value for the gross requirements of an end item in a specific time bucket

A) signals the need to purchase that end item in that period.
B) implies that value was scheduled by the MPS.
C) signals the need for a negative planned order receipt in that period.
D) is impossible.
E) is considered to be equal to zero.