The use of submarines on the high seas to sink any and all enemy ships of Germany
(
A. Unrestricted submarine warfare
O
B. internationally banded war tactic
C. totally inefficient use of war material
O
D. resulted in few deaths

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

post the grid otherwise i cant .

also it sounds like a math question not history.