Extrinsic (Exogenous)stains Can Be Removed by Rubber Cup Polishing

question 20

Multiple Choice

Extrinsic (exogenous) stains can be removed by rubber cup polishing.Intrinsic (endogenous) stains cannot be removed by rubber cup polishing but can be removed by air polishing.

• A) Both statements are true.
• B) Both statements are false.
• C) The first statement is true;the second statement is false.
• D) The first statement is false;the second statement is true.

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Definitions:

Investment Project

A project involving the expenditure of capital in order to generate returns or benefits over time.

Present Discounted Value

The current value of a future amount of money or stream of cash flows, adjusted for the time value of money.

Human Capital

The economic value of an individual's skills, knowledge, and experiences.

Future Earnings

Projected profits or income of a company or individual, often used in investment analysis to evaluate potential growth.