I invited Rachel to my party, but she couldnt come. She had arranged to do something else.

A. Without having arranged to do something else, Rachel would have come to my party as invited.

B. If it hadn't been for her arrangement for something else, Rachel would come to my party as invited.

C. Rachel would have come to my party, unless she hadn't arranged to so something else.

D. If Rachel hadn't arranged to do something else, she would come to my party as invited.