What follows is an opinion from the Supreme Court of the United States. Your task is to identify the disposition of the case, that is, the treatment the Supreme Court accorded the court whose decision it reviewed. The information relevant to this variable may be found near the end of the summary that begins on the title page of each case, or preferably at the very end of the opinion of the Court. For cases in which the Court granted a motion to dismiss, consider "petition denied or appeal dismissed". There is "no disposition" if the Court denied a motion to dismiss.

Opinion:
McKNIGHT v. GENERAL MOTORS CORP.
No. 92-1113.
Decided May 23, 1994
Per Curiam.
After petitioner appealed the dismissal of his employment discrimination claim, respondent moved for dismissal of the appeal and for sanctions. Respondent argued that the appeal was frivolous in light of controlling decisions of the Court of Appeals for the Seventh Circuit holding that § 101 of the Civil Rights Act of 1991, 105 Stat. 1071, 42 U. S. C. § 1981 (1988 ed., Supp. IV), does not apply to cases arising before its enactment. See Luddington v. Indiana Bell Tel. Co., 966 F. 2d 225 (1992); Mozee v. American Commercial Marine Serv. Co., 963 F. 2d 929 (1992). In an order dated September 30, 1992, the Court of Appeals granted respondent’s motion, dismissed the appeal, and imposed a $500 sanction on petitioner’s attorney.
The Court of Appeals correctly rejected petitioner’s argument that § 101 applies retroactively. See Landgraf v. USI Film Products, ante, p. 244; Rivers v. Roadway Express; Inc., ante, p. 298. However, if the only basis for the order imposing sanctions on petitioner’s attorney was that his retroactivity argument was foreclosed by Circuit precedent, the order was not proper. As petitioner noted in his memorandum opposing dismissal and sanctions, this Court had not yet ruled on the application of § 101 to pending cases. Filing an appeal was the only way petitioner could preserve the issue pending a possible favorable decision by this Court. Although, as of September 30,1992, there was no circuit conflict on the retroactivity question, that question had divided the District Courts and its answer was not so clear as to make petitioner’s position frivolous. See Mozee, supra, at 940-941 (Cudahy, J., dissenting).
Accordingly, the petition for a writ of certiorari is granted, the order imposing sanctions is vacated, and the case is remanded for further proceedings consistent with this opinion.
It is so ordered.

Question: What is the disposition of the case, that is, the treatment the Supreme Court accorded the court whose decision it reviewed?

Choices:
stay, petition, or motion granted
affirmed (includes modified)
reversed
reversed and remanded
vacated and remanded
affirmed and reversed (or vacated) in part
affirmed and reversed (or vacated) in part and remanded
vacated
petition denied or appeal dismissed
certification to or from a lower court
no disposition

Answer: 4