There are generally three types of claims in a bankruptcy proceeding: unsecured claims, secured claims and administrative expense claims. Section 503 of the Bankruptcy Code governs the allowance of administrative expense claims. Section 503 provides that "after notice and a hearing, there shall be allowed administrative expenses…, including the actual and necessary costs and expenses of preserving the estate." 11 U.S.C. § 503(b)(1)(A).
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