单项选择题

public class H { public static void main(String args[]) { Fact N = new Fact(5); System.out.print(N.fact()); } } class Fact { int n; Fact(int nn) { n = nn; } int fact() { int i, f = 1; for (i = 1; i <= n; i++) f="f" + i; return f; }>

A.out.print(N.fact());
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