When selecting a refrigerant it should have $(2$ mark$)$

A$.$ High oxone$-$depleting potential $($ODP$)$ and high global wirmine potent at $($GWV$)$

B$.$ Low ODP and high GWP

C$.$ High ODP and high GWP

D$.$ Low ODP and low GWP

Which of the following statements is correct about subcooling and superheating of a refrigerant in the refrigeration cycle? $(2$ mark$)$

A$.$ Both subcooling and superheating increase the refrigeration effect

B$.$ Both subcooling and superheating decrease the refrigeration effect

C$.$ Subcooling increases and superheating decreases the refrigeration effect

D$.$ Subcooling decreases and superheating increases the refrigeration effect

Which of the following refrigerant lines is on the low side of the refrigeration system? $(2$ mark$)$

A$.$ Discharge line

B$.$ Suction line

C$.$ Liquid line

D$.$ All of the above

How does the subcooling of the refrigerant affect the compressor$-$specific work? $(2$ mark$)$

A$.$ Increases

B$.$ Doesn't affect

C$.$ Decreases

D$.$ Either increases or decreases