The key lies in the end of the sentence: ...is planning to start the campaign and announce the release. Meaning this release, not the next one.
Thus, according to the Scrum guide and other best agile practices, the best answer would be C, BUT before that retrospective (answer C), the team would do release, which is not the expected by the marketing team, which on the other hand would start their campaign, without knowing that they are announcing wrong release. The thing is what would do first in this situation - in my opinion: identify the issue and stop any further damage/harm/cost related to the project.
So, in my opinion, D seems correct.