Answer: C.) Asset value ($) * exposure factor
Explanation: The Single Loss Expectancy is used to evaluate the loss in monetary terms that will be incurred by an organization as a result of risk on it's asset. It is expressed mathematically as :
SLE = AV * EF
Where AV refers to the value of the organization's asset.
EF, the exposure factor ranges from 0 - 1 and it measures the fractional percentage of the asset which will be lost due to risk on such asset.
It is an important aspect of risk management or assessment in an organization and steps must be taken to lower the exposure factor of assets.