Consider the following sets:

S = {p, q, r, s, t, u, v, w, x, y, z}K = {r, s, t, w, x}L = {p, r, u, x, z}M = {t, u, x, y}

List the elements in the following set:

A. {p, q, r, s, u, v, w, x, y, z}

B. {p, z}

C. {r}

D. {p, r, x, z}

E. {p, r, s, u, w, x, z}