The MATLAB code to solve the following differential equation?

dz$/$dt$=$m$*$x

z$(0)=0$;

Select one:

a$.$ sym z$($t$)$ m; eqn$=$diff$($z$,$t$)==$m$*$z;cond$=$z$(0)==0$;sol$($eqn$,$cond$)$;

b$.$ syms z$($t$)$ m;eqn$=$diff$($z$,$t$)=$m$*$z;cond$=$z$(0)==0$ sol$($t$)=$dsolve$($eqn$,$cond$)$;

c$.$ syms z$($t$)$ m;eqn $=$ diff$($z$,$t$)==$ m$*$x; zsol$($t$)=$ dsolve$($eqn$,$z$(0)==0)$;

d$.$ syms z$($t$)$ m;equn $=$ diff$($z$,$t$)==$a$*$x;cnd$=$x$(0)==0$;xsol$($t$)=$dsolve$($equn$,$cnd$)$