[单选题]
Compared to the electrostatic force, t,r5xd9 r zrwt(he 3qdnk;e (*d4ly/ fogrxt0j;:w b 3 lkzm5b1vonuclear force between adjacent protons in a nucrmvf go/b:0knzw ;3; dl3yej (q1kdo45tx *lbleus is
A. much weaker.
B. about the same size.
C. only slightly larger.
D. much larger.