Write the next sentence in the following story.

How to see northern lights in iceland
Visit iceland between october and april.
One of the most important aspects of planning a trip to iceland to catch the northern lights is to choose the right time of the year. Typically, the lights are most active from early september to the end of april each year, largely due to the longer periods of darkness during the winter.

pick from the following.
(1). Plan a trip during these months to give yourself the best chance of seeing the northern lights. Choose a remote place with little unnatural light.;
(2). The northern lights usually appear at the beginning of may or late november each year. For instance, if you plan to stay up much later during the winter, early december is typically used as an excellent time.;
(3). These hours will vary from year to year, but while july and april come fairly close to the equator, they can still be seasons in which you can actually see the lights. These circumstances tend to be ideal if you're planning a trip to switzerland.;
(4). Even in the coldest season, the northern lights are also likely to emit some blue light. In those colder parts of winter, iceland is generally considered the easiest time to observe them in the daytime.;. The answer should be
(1).