During team development, the handling of assumptions causes problems. Some team members reject the notion that assumptions are an expression of uncertainty. Others recommended exploring assumptions as an essential element of team building, following the Drexler/Sibbet Team Performance Model. Which statement best describes the handling of assumptions in this model: a. Managing and organizing assumptions means avoiding risks right from the start of the project b. The salesperson in charge is responsible for identifying all risks related to the customer project. c. Risks are a sign of uncertainty. Avoiding all uncertainties means that a project should have no risks at all d. Finding out more about assumptions should be an element of goal clarification