The year is divided into four seasons: spring, summer, autumn and winter. On the northern hemisphere it is summer when it is winter on the southern hemisphere, and the other way around. Which of the following sentences is true?
The summer on the northern hemisphere is longer than the summer on the southern hemisphere
The summer on the northern hemisphere is shorter than the summer on the southern hemisphere
The summer on the northern hemisphere is as long as the summer on the southern hemisphere
None of the above