Liquid Crystal Display (LCD) Monitors Have Largely Replaced Cathode Ray

Multiple Choice

Liquid crystal display (LCD) monitors have largely replaced cathode ray tube (CRT) display monitors for televisions and computers. Which of the following is a problem that results from use of LCD monitors?

A) The LCD monitors need to be shielded with lead, and lead is a toxic metal.
B) Large amounts of nitrogen trifluoride (NF₃) are used in production of LCDs, and much of it is released to the atmosphere. NF₃ is a greenhouse gas that is much more efficient at trapping atmospheric heat than other greenhouse gases, such as CO₂.
C) LCD monitors use less energy than CRT monitors do.
D) Manufacturing of LCD monitors releases much more CO₂ into the atmosphere than manufacturing of CRT monitors did.