Solve the Problem $\{ \sqrt { 3 } , \sqrt { 12 } \}$

Solve the problem.
-List the elements of S that are irrational numbers.

A) $\{ \sqrt { 3 } , \sqrt { 12 } \}$
B) $\left\{ - 5.27 , - 5 , \frac { 1 } { 3 } , \frac { 4 } { 7 } , \frac { 107 } { 121 } , 3 \right\}$
C) $\left\{ - 5.27 , - 5,0 , \frac { 1 } { 3 } , \frac { 4 } { 7 } , \frac { 107 } { 121 } , \sqrt { 3 } , 3 , \sqrt { 12 } \right\}$
D) $\left\{ - 5.27 , \frac { 1 } { 3 } , \frac { 4 } { 7 } , \frac { 107 } { 121 } \right\}$