With no explanation, chose the best option from "A", "B", "C" or "D". back their severance benefits before filing their ADEA claims, notwithstanding Plaintiffs’ previously executed waiver of all claims against Allied. D. Summary Judgment on Counterclaims Defendants have appealed the district court’s grant of summary judgment on their counterclaims arguing that the court denied Defendants both adequate notice and an opportunity to respond to Plaintiffs’ summary judgment motion, as required under Fed.R.Civ.P. 56(e) and Circuit Rule 50. Specifically, Defendants complain that the court failed to afford Defendants the full ten days notice on Plaintiffs’ motion, as required by Rules 56(c) and 50. In response, we observe that such objections must be raised before the trial court or they are forever waived. See Tripp v. May, 189 F.2d 198, 199-200 (7th Cir.1951) (<HOLDING>). Thus, Alied waived its chance to appeal these

A: holding that a litigant waives any violations of rule 56cs ten day requirement if he fails first to object before the trial court
B: holding that defendant forfeits right to have issue considered on appeal when he fails to object to misconduct at trial
C: holding that when a district court fails to provide reasons for imposing special conditions and the defendant fails to object we review for plain error
D: holding that litigant must object at trial to preserve error for review
A.