12.Which description details how the total energy of an open system can be
increased?
A. The kinetic energy can be increased by increasing the velocity of the
particles in the system.
B. The kinetic energy can be increased by decreasing the velocity of the
particles in the system.
C. The gravitational potential energy can be increased by decreasing the
height of the objects in the system.
D. The internal energy can be increased by removing heat to decrease the
velocity of the particles in the system.