为测定水样中氯离子含量，需2％的硝酸银溶液。若用硝酸银晶体配制100 g该溶液，需加水请选择DCBA8a6s9J,s6^4y4v+S)@3r+R(W1E/b'R)s,l/F7V(a(A,w
A．48 g+S)@3r+R(W1E/b'R)s,l/F7V(a(A,w
B．49 g+S)@3r+R(W1E/b'R)s,l/F7V(a(A,w
C．98 g+S)@3r+R(W1E/b'R)s,l/F7V(a(A,w
D．99 g+S)@3r+R(W1E/b'R)s,l/F7V(a(A,w