I believe it should be C - documentary.
It should be noted that the statement "The cost of the proposed strategy is through the roof" is an idiom and it simply means the increase in price for a particular thing.
<h3>What is an idiom?</h3>
An idiom simply means a group of words that is established by usage and have a different meaning from the individual words.
In this case, "The cost of the proposed strategy is through the roof" is an idiom and it simply means the increase in price for a particular thing. This typically occurs when there's inflation.
Learn more about idiom on:
brainly.com/question/902417
