Determine Which of the Numbers in the Set Below Are $\left\{ - 8,13 , \frac { 2 } { 5 } , 10.5 , - 2.25 \right\}$

Multiple Choice

Determine which of the numbers in the set below are integers. $\left\{ - 8,13 , \frac { 2 } { 5 } , 10.5 , - 2.25 \right\}$

A) $\{ - 8,13,10.5 , - 2.25 \}$
B) $\left\{ - 8,13 , \frac { 2 } { 5 } , 10.5 , - 2.25 \right\}$
C) $\{ 13 \}$
D) $\left\{ \frac { 2 } { 5 } , 10.5 , - 2.25 \right\}$
E) $\{ - 8,13 \}$