One Way to Think About the Low Binding Energy E_b)

One way to think about the low binding energy E_b) per nucleon for low A numbers is

A) that there are few protons, hence there is less electrostatic repulsion.
B) that there are few electrons to provide the electrostatic attraction.
C) at low A the number of nearest neighbors per nucleon is small compared to higher A numbers.
D) at low A, the nucleus is less spherical, hence there is less surface tension.
E) None of the above statements is correct.