翻译成英文“关于A文件的准备工作是由B部门的同事准备,具体情况请跟Alice沟通

It is colleague from B department to prepare A document, please contact Alice for details.

“about a document's preparatory work is by the B department's colleague preparation, special details please with the Alice communication

Document A was prepared by our colleagues of Department B, so please communicate with Alice for details.

with regard to the preparation work about the document A is in charge of the colleague in partment B , please contact Alice for more details

the preparation work for document A is done by Department B.
for more details, please contact Alice