Let $S = \left\{ - 1,0 , \frac { 1 } { 2 } , \sqrt { 2 } , 2 \right\}$

Multiple Choice

Let $S = \left\{ - 1,0 , \frac { 1 } { 2 } , \sqrt { 2 } , 2 \right\}$ . Use substitution to determine which of the elements of $S$ satisfy the inequality $x - 1 \leq 0$ .

A) $\{ - 1,0 \}$
B) $\left\{ - 1,0 , \frac { 1 } { 2 } \right\}$
C) $\left\{ 0 , \frac { 1 } { 2 } , \sqrt { 2 } \right\}$
D) $\left\{ \frac { 1 } { 2 } , \sqrt { 2 } , 2 \right\}$
E) $\{ \sqrt { 2 } , 2 \}$