请选择ABC3Q0Q0k-Y)I,V9g(H7C,F1z4k+V7`/l+\2k,xThe black dog is _____ than the white dog.4D+X(I4g,]5z8@
A . thin4D+X(I4g,]5z8@
B .thiner4D+X(I4g,]5z8@
C .thinner4D+X(I4g,]5z8@