The Point of Maximum Stability in the Binding Energy Curve ${ } _ { 2 } ^ { 4 } \mathrm { He }$

The point of maximum stability in the binding energy curve occurs in the vicinity of which of the following isotopes?

A) ${ } _ { 2 } ^ { 4 } \mathrm { He }$

B) ${ } _ { 26 } ^ { 56 } \mathrm { Fe }$

C) ${ } _ { 5 } ^ { 11 } \mathrm {~B}$

D) ${ } _ { 83 } ^ { 209 } \mathrm { Bi }$

E) ${ } _ { 91 } ^ { 231 } \mathrm {~Pa}$