Chinese Communist Party invades Vietnam
These are all applicable, so it would depend on the circumstance. If you are in a job interview, I would say that either the first or last one is good. You don't want to sound to pretentious though, so D would be good.
The first one is A because they were supposed to put a comma after "but". I'm not so sure about the second one.
Answer:
Option A
Explanation:
<em>All words in the title and subtitle except articles, prepositions, and coordinating conjunctions except when these are first and last words in a title</em> is the answer to this question.
Answer:
Plural
Explanation:
When there is more than 1 subject and more than one verb