What follows is an opinion from a United States Court of Appeals. Your task is to determine whether there was an issue discussed in the opinion of the court about the interpretation of federal rule of procedures, judicial doctrine, or case law, and if so, whether the resolution of the issue by the court favored the appellant.

UNITED STATES of America ex rel., Glenn SLEIGHTER, Appellant, v. William J. BANMILLER, Supt., Eastern State Penitentiary, Philadelphia, Pennsylvania.
No. 12275.
United States Court of Appeals Third Circuit.
Submitted Dec. 6, 1957.
Decided Dec. 17, 1957.
Glenn Sleighter, pro se.
George C. Eppinger, Chambersburg, Pa., for appellee.
Before McLAUGHLIN, KALODNER and STALEY, Circuit Judges.
PER CURIAM.
In the absence of an opinion by the district court, it is impossible for us to determine the basis of that court's decision in its denial of appellant’s petition for a writ of habeas corpus and to properly consider and pass upon the merits of
this appeal. Cf. United States ex rel. De-Vita v. McCorkle, 3 Cir., 1954, 216 F.2d 743.
The order of the district court will be vacated and the cause remanded for further proceedings in accordance with this opinion.

Question: Did the interpretation of federal rule of procedures, judicial doctrine, or case law by the court favor the appellant?
A. No
B. Yes
C. Mixed answer
D. Issue not discussed
Answer: