Which of the Following Atomic Symbols Represents an Isotope Of ${ } ^ { 113 } \mathrm { Cd }$

Which of the following atomic symbols represents an isotope of ${ } ^ { 113 } \mathrm { Cd }$ ?

A) ${ } ^ { 112 } \mathrm { Ag }$
B) ${ } ^ { 114 } \mathrm { In }$
C) ${ } ^ { 113 } \mathrm { In }$
D) ${ } ^ { 114 } \mathrm { Cd }$
E) ${ } ^ { 113 } \mathrm { Ag }$