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