In Order to Fire a Projectile Upward and Have It

Multiple Choice

In order to fire a projectile upward and have it escape the Earth's gravity,

A) the kinetic energy of the projectile may have any positive value.
B) the potential energy of the projectile must be positive
C) the total energy (kinetic plus potential) of the projectile must be negative
D) the total energy (kinetic plus potential) of the projectile must not be negative
E) the total energy (kinetic plus potential) of the projectile must be exactly zero