[单选题]
There is a limit to the size ofm.n581l s lphjcxm:muj2d /; p at1f4cmhcj,p0t 4z so/ .t.akm stable nucleus because of
A. the limited range of the strong nuclear force.
B. the weakness of the electrostatic force.
C. the weakness of the gravitational force.
D. none of the given answers
