Which Species Has 63 Neutrons?
A) ${ }_{43}^{112} \mathrm{Cd}$ B) ${ }_{49}^{112} \text { In }$

Multiple Choice

Which species has 63 neutrons?

A) ${ }_{43}^{112} \mathrm{Cd}$
B) ${ }_{49}^{112} \text { In }$
C) ${ }_{69}^{63} \mathrm{Cu}$
D) ${ }_{63}^{152} \mathrm{Eu}$
E) none of the above