Regarding pension obligations and their associated auditing issues, which of the following statements is true?

(A) The independent actuarial firm relied upon by an entitys management provides certain assumptions, such as workforce life expectancy, which are trusted implicitly by the auditor.

(B) The findings of a specialist, such as an actuary, constitute audit evidence to be evaluated by the auditor.

(C) If all other factors remain the same, a decrease in the discount rate assumption will reduce an entitys pension liability.

(D) Defined contribution plans require more accounting estimates than defined benefit plans.