What follows is an opinion from a United States Court of Appeals. Your task is to identify the type of district court decision or judgment appealed from (i.e., the nature of the decision below in the district court).

Opinion:
COMMONWEALTH OF MASSACHUSETTS, Division of Employment Security, Petitioner, Appellant, v. Irving WIDETT, Trustee, Respondent, Appellee.
No. 4723.
United States Court of Appeals First Circuit.
June 9, 1953.
Sydney Zuker, Asst. Atty. Gen. of Mass., George Fingold, Atty. Gen. of Mass., John A. Brennan, Chief Counsel, Division of Employment Security, Harry P. Levowich, Counsel, Division of Employment Security, Boston, Mass., and Stephen F. LoPiano, Jr., Asst. Atty. Gen., on brief, for appellant.
Joseph Kruger, Boston, Mass., Alan J. Dimond and Widett & Kruger, Boston, Mass., on brief, for appellee.
Before MAGRUDER, Chief Judge, and WOODBURY and HARTIGAN, Circuit Judges.
PER CURIAM.
The order of the District Court is affirmed on Memorandum of Decision below. 108 F.Supp. 183.

Question: What is the type of district court decision or judgment appealed from (i.e., the nature of the decision below in the district court)?

Choices:
Trial (either jury or bench trial)
Injunction or denial of injunction or stay of injunction
Summary judgment or denial of summary judgment
Guilty plea or denial of motion to withdraw plea
Dismissal (include dismissal of petition for habeas corpus)
Appeals of post judgment orders (e.g., attorneys' fees, costs, damages, JNOV - judgment nothwithstanding the verdict)
Appeal of post settlement orders
Not a final judgment: interlocutory appeal
Not a final judgment: mandamus
Other (e.g., pre-trial orders, rulings on motions, directed verdicts) or could not determine nature of final judgment
Does not fit any of the above categories, but opinion mentions a "trial judge"
Not applicable (e.g., decision below was by a federal administrative agency, tax court)

Answer: 9