What Is Indicated by the Fact That Isotherms Are Oriented

What is indicated by the fact that isotherms are oriented east-west on global temperature maps?

A) Locations at the same longitude in both the eastern and western hemispheres receive nearly the same amount of solar energy.
B) Locations at the same latitude in both the eastern and western hemispheres receive nearly the same amount of solar energy.
C) Locations at the same latitude in both the northern and southern hemispheres receive nearly the same amount of solar energy.
D) Locations at the same latitude in both the eastern and western hemispheres receive nearly the same amount of precipitation.
E) Locations at the same longitude in both the northern and southern hemispheres receive nearly the same amount of precipitation.