List the Elements of the Set $\mathrm { A } \cup \mathrm { B }$

List the elements of the set.
-If A = {59, 60, 61, 64} and B = {57, 59, 60, 62}, list the elements ofof $\mathrm { A } \cup \mathrm { B }$

A) {57, 61, 62, 64}
B) $\varnothing$
C) {57, 59, 60, 61, 62, 64}
D) {59, 60}