请选择ABCD+B6t4r8w4W _______ all the cities in China, shanghai is the largest.5b,`1h,V,m2O3p,p
A. In5b,`1h,V,m2O3p,p
B. At5b,`1h,V,m2O3p,p
C. With5b,`1h,V,m2O3p,p
D. Of5b,`1h,V,m2O3p,p