Which of these statements would be MOST important to include in an objective summary of the article?

A
If a weather balloon goes too high, the atmosphere's pressure causes the balloon to expand and pop.
B
Weather satellites can help scientists monitor the atmosphere's ozone, air pollution and greenhouse gases.
C
Some technologies that observe the atmosphere are used on the ground, while others are used in the sky.
D
The best technology for observing the atmosphere is computer modeling because it is the most accurate.

Aheat pump with refrigerant-134a as the working fluid is used to keep a space at 25°c by absorbing heat from geothermal water that enters the evaporator at 500c at a rate of 0.065 kg/s and leaves at 40°c. the refrigerant enters the evaporator at 20°c with a quality of 23 percent and leaves at the inlet pressure as saturated vapor. the refrigerant loses 300 w of heat to the surroundings as it flows through the compressor and the refrigerant leaves the compressor at 1.4 mpa at the same entropy as the inlet. determine: (a) the degrees of subcooling of the refrigerant in the condenser, b)-the mass flow rate of the refrigerant . (c) the heating load and the cop of the pump, and d)-the theoretical minimum power input to the compressor for the same heating load.