Thank you very much, but the specific Fare Rules for D fare are
Fare Rules
Business Class
D Fare Class
Business Class PROMOTIONAL Fare
Fare is refundable
Changes can be made without a change fee. A fare increase may apply
It only says "refundable" not "fully refundable". And i noticed they used "
changes", so does it mean it "no change fee" only applies to
changes to another flight not
cancellation?