Which Latin expression concludes Wilfred Owen’s war poem "Dulce et Decorum est"?

Explanation

The poem "Dulce et Decorum est" by Wilfred Owen ends with the Latin phrase "Pro Patria Mori," which translates to "to die for one's country." The other options are unrelated Latin phrases: "Pax Romana" means "Roman peace," "Veni, Vidi, Vici" means "I came, I saw, I conquered," and "Dux Bellorum" means "leader of wars."