将正方体分割成很多小正方体后，下面说法正确的是请选择DCBA+i+I-m+W7j:w,K*k5d.b:W3t-h1['r3L)r6?(M.p-\
A．表面积减少，体积不变3t-h1['r3L)r6?(M.p-\
B．体积减少，表面积增加3t-h1['r3L)r6?(M.p-\
C．表面积和体积都不变3t-h1['r3L)r6?(M.p-\
D．体积不变，表面积增加3t-h1['r3L)r6?(M.p-\