I'm not sure if this is the answer, but they were backed by China
C should be the answer you are looking for
Answer:
This plan was presented to the Emperor by Prime Minister Hideki Tōjō and in effect ended discussion of invading Australia. The FS Operation was not implemented, however, due to Japan's defeats in the Battle of the Coral Sea and Battle of Midway and was cancelled on 11 July 1942.
/////the Pacific Ocean./////
D is the answer for apex or any other but you have to read the correct answer