Read the following excerpt from a US court opinion:
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a provision of CSRS that requires five years of civilian service for disability retirement eligibility. See 757 F.2d at 264-65. We rejected the argument that military service creditable under § 8332 for the purpose of calculating the proper annuity should also count as civilian service to meet the eligibility requirements of § 8337(a). Id. at 265. We explained that the five-year civilian service require ment is a “threshold standard of eligibility” and only if this threshold standard is met could military service be counted to determine the appropriate annuity. Id. “Congress obviously wanted only those individuals with a minimum of federal civilian service to be entitled to a federal civil service annuity.” Id.; see also Tizo v. Office of Pers. Mgmt., 325 F.3d 1378, 1380 (Fed.Cir.2003)  (citing Pub.L. No. 80-426, § 5, 62 Stat. 48,
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What is the most suitable continuation to the opinion? Your options are:
A. holding that the govemment is not liable under the federal tort claims act for injuries to service members where the injuries arise out of or are in the course of activity incident to military service
B. holding that under the 1948 version of csrs civil servants were required to meet the fiveyear service requirement exclusive of military service 
C. holding that service is not avoided by service on a partys attorney as service on an attorney is ineffective unless he has been authorized to accept such service
D. holding military service disability payments are community property
E. holding the rule 4 requirement of delivery to the appropriate united states attorney required personal service not service by certified mail
Reply with [A, B, C, D, E] only.