When the government's history records are compiled, those who make it - government historians, only in some cases enjoy the freedom that university scholars have. However, most of the topics dealt with by government historians can be controversial, and therefore they do not have the right to a personal point of view. When government historians, officials write about any controversial topic, which, if not done properly, can have serious consequences, their works must be approved and verified. Every work is subject to review and approval by the administrator of the agency. One such comprehensive historical record of the use of the atomic bomb at the end of the Second World War caused a sharp controversy over credible conclusions. That's why their work is very different from university historians. Some historical sources may be available to them, which are otherwise difficult.
The answer is A)