Which of the following statements is correct about the Altmans z-score model?

Select one:

a. An increase in the Working capital/Total assets ratio increases the default risk of the borrower.

b. The score of the Altmans z-score model is restricted to the zero-one interval.

c. When two identical corporations merge, the Altmans z-score is constant.

d. None of the other statements are correct.

e. All of the statements are correct.