The Difference Between "Risk" and "Uncertainty" Is

Multiple Choice

The difference between "Risk" and "Uncertainty" is:

A) "Risk" is quantifiable and can be estimated, with the use of probability. "Uncertainty" is unknown
B) "Risk" always exists. No investment can be "risk-free". But there are things that can be "certain"
C) There is no difference. The terms are interchangeable
D) "Risk" cannot be measured. "Certainty" can be estimated with the use of probability