With no explanation, chose the best option from "A", "B", "C" or "D". each of the debtor’s creditors and, if the debtor is a corporation or partnership, on each of the debtor’s equity security holders and partners. See 11 U.S.C. § 1227(a). The order of confirmation acts as res judicata on all matters addressed by the plan. See First Nat’l Bank v. Allen, 118 F.3d 1289 (8th Cir.1997); In re Watkins, 240 B.R. 735 (Bankr.C.D.Ill.1999). Given the res judicata effect of confirmation, the terms of the plan may not be collaterally attacked or otherwise invalidated unless confirmation is revoked under 11 U.S.C. § 1230 (if confirmation procured by fraud), or the case is either dismissed or converted. See COLLIER ON BANKRUPTCY, ¶ 1227.01[1] (15th Ed.2000) citing 11 U.S.C. § 349(b); Harmon v. U.S., 184 B.R. 352 (D.S.D.1995); In re Nash, 765 F.2d 1410 (9th Cir.1985) (<HOLDING>). Collier on Bankruptcy further states: The

A: holding that dismissal of a chapter 13 case vacates a confirmed plan
B: holding that the conversion of a chapter 7 petition to a chapter 13 petition was not final until the plan itself was approved
C: holding that notwithstanding a debtors inability to obtain a chapter 13 discharge a debtor is nonetheless eligible to file a chapter 13 case
D: holding that a confirmed chapter 13 plan is binding on all parties under 11 usc  1327a however the plan may be modified pursuant to 11 usc  1329
A.