Let a {Q, S, U, V, W, X, Y, Z} $\mathrm{C} \cup \mathrm{A}$

Multiple Choice

Let A {q, s, u, v, w, x, y, z}, B {q, s, y, z}, C {v, w, x, y, z}, and D {s}. Specify the following set.
- $\mathrm{C} \cup \mathrm{A}$

A) $\varnothing$
B) $\{\mathrm{s}, \mathrm{t}\}$
C) $\{\mathrm{q}, \mathrm{s}, \mathrm{u}, \mathrm{v}, \mathrm{x}, \mathrm{y}, \mathrm{z}\}$
D) $\{\mathrm{q}, \mathrm{s}, \mathrm{u}, \mathrm{v}, \mathrm{w}, \mathrm{x}, \mathrm{y}, \mathrm{z}\}$ or $\mathrm{A}$