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Pick out the wrong statement. | |
A. | Multigrade lubricating oils have high viscosity index. [Wrong Answer] |
B. | Paraffinic oil has very high viscosity index. [Wrong Answer] |
C. | Naphthenic oil has very low viscosity index. [Wrong Answer] |
D. | High viscosity index means a large change in viscosity with change in temperature. [Correct Answer] |