Geography · Climatology

With reference to the phenomenon sometimes described as a 'Double Sunrise', consider the following statements: I. It refers to an apparent repetition of sunrise caused by the combined effect of atmospheric refraction and the observer's geographical location or swift altitude change. II. Such a phenomenon is most likely to be observed in regions close to the International Date Line due to longitudinal separation and calendar-day transition. III. It is associated with astronomical events involving binary star systems that illuminate a planet simultaneously. Which of the statements given above is/are correct?