John Kotter built on Lewin's three-step model to create a more detailed approach for implementing change.
Which of the following steps in the Kotter's eight-step plan for implementing change represents the "unfreezing" stage in the Lewin's three-step model?

A) Plan for, create, and reward short-term "wins" that move the organization toward the new vision.
B) Consolidate improvements, reassess changes, and make necessary adjustments in the new programs.
C) Create a new vision to direct the change and strategies for achieving the vision.
D) Empower others to act on the vision by removing barriers to change and encouraging risk taking and creative problem solving.
E) Reinforce the changes by demonstrating the relationship between new behaviors and organizational success.

Stocks a, b, and c are similar in some respects: each has an expected return of 10% and a standard deviation of 25%. stocks a and b have returns that are independent of one another; i.e., their correlation coefficient, r, equals zero. stocks a and c have returns that are negatively correlated with one another; i.e., r is less than 0. portfolio ab is a portfolio with half of its money invested in stock a and half in stock b. portfolio ac is a portfolio with half of its money invested in stock a and half invested in stock c. which of the following statements is correct? a. portfolio ab has a standard deviation that is greater than 25%.b. portfolio ac has an expected return that is less than 10%.c. portfolio ac has a standard deviation that is less than 25%.d. portfolio ab has a standard deviation that is equal to 25%.e. portfolio ac has an expected return that is greater than 25%.