4. Please choose the wrong command.

A、symss;P=(s+3)^2*(s^2+3*s+2)*(s^3+12*s^2+48*s+64);P1=simplify(P);
B、symss;P=(s+3)^2*(s^2+3*s+2)*(s^3+12*s^2+48*s+64);P2=expand(P);
C、symss;P=(s+3)^2*(s^2+3*s+2)*(s^3+12*s^2+48*s+64);P3=factor(P);
D、symss;P=(s+3)^2*(s^2+3*s+2)*(s^3+12*s^2+48*s+64);P4=prod(P3)