請幫忙翻譯成英文，謝謝﹗

陳先生決定ABC會議會於XYZ會議召開後才舉行。
A) Mr. Chan decided to hold the ABC meeting right after the XYZ meeting is completed.
or
B) Mr. Chan decided that after the XYZ meeting will follow by ABC meeting (immediately).

Mr. Chen decided that the ABC conference will convene after the XYZ conference only will then hold.

Mr. Chen decided the ABC conference can convene after the XYZ conference only then is held.

Mr. Chen decided that the ABC conference will convene after the XYZ conference only will then hold.

Mr. Chan is decided to hold the ABC meeting after the conference of XYZ.

Mr.Chan decided to hold meeting XYZ after meeting ABC.