PTE Listening MC Multiple: Which of the following statements concerning the operation of catalytic converters are …

Which of the following statements concerning the operation of catalytic converters are correct?

• A.convert toxic emissions into less harmful emissions by providing an environment for toxic combustion.
• B.They convert the toxic substances emitted from engines into less harmful substances.
• C.They are most commonly used in mining equipment, trucks and buses render them ineffective.
• D.Carbon and other engine deposits impede their efficient operation.
• E.The inclusion of diesel engines is prohibited by law.