Two identical satellites orbit Earth in separate, stable circular orbits. Satellite A has an orbital radius of 2RE, and Satellite B has an orbital radius of 3RE, where RE is Earth’s radius. Which statement best compares their total mechanical energies EA and EB?
a) EB is more negative than EA because gravitational potential energy becomes more negative as orbital radius increases.
b) EA is more negative than EB because total mechanical energy becomes less negative as orbital radius increases.
c) Both EA and EB are positive because the satellites' kinetic energy is greater in magnitude than their potential energy.
d) EA is less negative than EB because Satellite A has greater kinetic energy.