The name of this message was the "Zimmermann telegram." This is because this message was sent by a German official named Arthur Zimmermann to promise Mexico that if they Mexico joined Germany in the war, Germany would regain its lost territory that the United States had previously obtained.
These people did invade China, but their raids were not successful.
The treaty was signed by Russia, Great Britain, and the US to no test anywhere especially the atmosphere water or under ground.
The correct answer is A!
I am pretty sure your answer is B