Which of the Following Is a Stable Nuclide?
A) ${ } _ { 8 } ^ { 15 } \text{O}$

Which of the following is a stable nuclide?

A) ${ } _ { 8 } ^ { 15 } \text{O}$
B) ${ } _ { 90 } ^ { 232 } \mathrm { Th }$
C) ${ } _ { 43 } ^ { 98 } \mathrm { Tc }$
D) ${ } _ { 20 } ^ { 40 } \mathrm { Ca }$
E) ${ } _ { 15 } ^ { 30 } \mathrm { P }$