| With respect to lubricating oils, what statement is true concerning viscosity and viscosity index? |
| A) Viscosity is a measure of an oil's internal resistance to flow and viscosity index is a measure of an oil's ability to resist change in viscosity as the temperature changes. |
| B) Viscosity is a measure of an oil's resistance to emulsification and viscosity is a measure of an oil's ability to resist change in viscosity as the temperature changes. |
| C) Viscosity is a measure of an oil's lubricity and viscosity index is a measure of an oil's ability to resist change in lubricity as the pressure changes. |
| D) Viscosity is a measure of an oil's ability to resist oxidation and viscosity index is a measure of an oil's ability to resist change in viscosity as the temperature changes. |
