BDU Co.

Sir this is a question from B.P.P Kit.

Which two of the following, used by BDU Co, reduce uncertainty in decision-making?.

a) Expected Value Analysis
b) Market Research
c) Focus Group
d) Relevant Costing.

The right answer is option b and c, though no explanation has been provided.
But i believe they are right because Uncertainty exists when we cannot assign probabilities. And expected value uses probabilities so its not a right option and relevant costing as an option is irrelevant

So sir my question is as Maximax, MaxiMin, MiniMax Regret Rule, Sensitivity Analysis, Market Research do not take into consideration the probabilities

Can we say that they help in dealing with Uncertainty rather than Risk (Based upon the definition of Risk and Uncertainty)?