With no explanation, chose the best option from "A", "B", "C" or "D". fact that a fiduciary’s duty ari uthorized by the plan ... to be done by the plan administrator,” 29 U.S.C. § 1342(d)(1)(A)®, including the power to “construe the Plan and to determine all questions of fact that may arise thereunder,” (Katz Aff. Ex. 10 at VII-2). Determining which documents were validly enacted according to their terms, and which were unreliable or disregarded by the Pan Am Plan administrator, are responsibilities encompassed within PBGC’s power to interpret the Plan and determine relevant questions of fact. Because the Plan gives PBGC the discretionary power to construe the Plan, its decisions in this regard cannot be overturned unless they were arbitrary and capricious. Firestone Tire & Rubber Co. v. Bruch, 489 U.S. 101, 112-15, 109 S.Ct. 948, 103 L.Ed.2d 80 (1989) (<HOLDING>); Varity, 516 U.S. at 514-15, 116 S.Ct. 1065

A: holding that plan language giving plan administrator power to determine which employees are eligible to participate in the plan and providing all parties dealing with the plan an interpretation of plan provisions on request indicates deferential standard of review of trustee eligibility decisions
B: holding that a denial of benefits will not be reviewed de novo where the language of an erisa plan gives the administrator or fiduciary discretionary authority to determine eligibility for benefits or to construe the terms of the plan
C: holding that plan language granting the plan administrator the sole discretion to construe the terms of a long term disability policy and to determine eligibility under the policy triggered arbitrary and capricious review
D: holding that plan fiduciary is entitled to deferential review if empowered by the plan to construe its terms in order to determine benefit eligibility
D.