Whether defendant in a federal criminal case is entitled to appeal the district court's judgment denying motion to modify sentence under 18 U.S.C. § 3582(c)(1)(A) in forma pauperis?

QUESTION PRESENTED,.-. : : Whether defendant in a federal criminal case is entitled to appeal the district court's judgment denying motion to modify sentence under 18 U.S.C. § 3582(c)(1)(A) in forma pauperis ? And, if so, can the courts deny IFP status and require criminal defendant to pay cost of appeal in full by applying the merits determination established by 28 U.S.C. § 1915 ? . . ; LEST OF PARTIES 0 . ALL ‘parties appear. in the caption of the case on the cover page.