What is the effect of setting the Freeze Book Inventory indicator in a physical inventory document?

What is the effect of setting the Freeze Book Inventory indicator in a physical inventory document?
A . The book inventory is determined for each material and fixed in the physical inventory document.
B . Goods movements for materials in the document are parked until the count is posted.
C . The materials in the physical inventory document are blocked for goods movements.
D . The book inventory is determined for each material and fixed in the material master record.

Answer: A