With no explanation, chose the best option from "A", "B", "C" or "D". of The Colony v. North Texas Mun. Water Dist., 272 S.W.3d 699, 731 (Tex.App.-Fort Worth 2008); Van Duzer v. U.S. Bank Nat. Ass’n, 995 F.Supp.2d 673, 698-99 (S.D.Tex.2014). An exception to this rule arises when overpayment is made under a valid contract. Id. and id., citing Sw. Elec. Power Co. v. Burlington N. R.R. Co., 966 S.W.2d 467, 469-70 (Tex.1998) (“in some circumstances overpayments under a valid contract may give rise to a claim for restitution or unjust enrichment”), in turn citing the following inter alia: Bowers v. Missouri, Kan. & Tex. Ry. Co., 241 S.W. 509, 510-11 (Tex.App.-Texarkana 1922, no writ) (allowing restitution for freight charges paid in excess of rates specified in shipping contract); Gulf Oil Corp. v. Lone Star Producing Co., 322 F.2d 28, 31-33 (5th Cir.1963) (<HOLDING>); Natural Gas Pipeline Co. v. Harrington, 246

A: holding that plaintiff could recover money mistakenly paid in excess of contract price
B: holding that a contract must entitle the plaintiff to money damages in the event of the governments breach of that contract
C: holding that attorneys could not recover fees in excess of amount billed
D: holding that plaintiff could recover medical fees not actually paid by the insurance company pursuant to an insurance contract
A.