Final answer:
The correct answer is (A) Pyrrhic, as it indicates a victory with significant losses, aligning with the mournful tone of the context provided.
Step-by-step explanation:
The Chorus celebrates the slaying of the two men to be the ultimate tragic victory. This implies that the victory came at a great cost, and despite being a 'win,' it is marked by sorrow and loss. The term 'Pyrrhic' from option (A) refers to a victory that inflicts such a devastating toll on the victor that it is tantamount to defeat. Given the context of mourning and sadness suggested by the passage from Martial, Epigrams 5.67, which speaks of a young life cut short and a glory tainted by the cost, the Chorus is likely referring to a Pyrrhic victory rather than one that is purely glorious, decisive, or simply costly. Hence, the correct answer is (A) Pyrrhic.