Which Question Below Is an Example of a Situational Question

Which question below is an example of a situational question?

A) "Based on your past work experience, what is the most significant action you have ever taken to help out a co-worker?"
B) "What experience have you had with direct point-of-purchase sales?"
C) "What factors should one consider when developing a television advertising campaign?"
D) "Suppose you were giving a sales presentation and a difficult technical question arose that you could not answer. What would you do?"
E) "What work experiences, training, or other qualifications do you have for working in a teamwork environment?"