Answer:
Unsure
Step-by-step explanation:
So I belive he wanted to bomb China and North Korea but there is no answer to that however, he did want to bomb the Korean peninsula in general so d is your best option because firstly B and C are ridiculous answers (because neither Japan nor Vietnam were involved) and bombing the Ussr would be a dangerous move (since they had access to atomic bombs by that point, which they first got in 1949 and the Korean War happened in 1950-1953) so in conclusion d is your best option.