Which of the following statements is correct with regard to the heat range of spark plugs?
A. Spark plugs which have high heat dispersion performance are known as cold type spark plugs and those with low performance as hot type spark plugs
B. The spark plugs which have low heat dispersion performance are known as cold type spark plugs and those with high performance as hot type spark plugs
C. If the spark plugs are sooty, then cold plugs to be tried
D. If the spark plugs are sooty, then hot plugs to be tried
Answer: Option A

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