Which of the following statements is LEAST-Likely true?

A. NOX emissions are highest at a point near stoichiometric.
B. NOX emissions are more when the mixture is leaner than 16:1.
C. The catalytic converter is more efficient at controlling HC and CO when the air-fuel mixture is stoichiometric.
D. A rich mixture will cool combustion and has less O2, so NOX emissions are lower.


Answer: B

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