What preparetion should be made before arriving at the airport? A: We should know the clients' name and gender. B: We should know the clients' marriage status. C: We should know how to properly address the clients. D: We should prepare a picking up card, sometimes flowers for females E: We should know confirm the clients' flight number and arriving time. F: We should reserve a hotle for the clients. G: We should know the clients' all plannings.