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The function of oil control rings is that it

A. Lubricates the cylinder wall by releasing oil from its hole

B. Keeps the cylinder wall lubricated by holding oil in its channel

C. Prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan

D. Maintains a seal and prevents escape of burned gases and oil leakage

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