If the chemical analysis of a lube oil sample taken from a diesel engine indicates an increased neutralization number, the （）.<br>A:acidity has increased<br>B:viscosity has decreased<br>C:demulsibility has improved<br>D:foaming is guaranteed to occur

If the chemical analysis of a lube oil sample taken from a diesel engine indicates an increased neutralization number, the （）.
A:acidity has increased
B:viscosity has decreased
C:demulsibility has improved
D:foaming is guaranteed to occur

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