[单选题]
Compared to the electrostatic force, the nu 0-;hb/q bg(mgu,pxq .ufgzl(clear force between a2zhl56vxj ti;wppe :/ djacent protons in/i5 w;6 zvlxjp2etph: a nucleus is
A. much weaker.
B. about the same size.
C. only slightly larger.
D. much larger.