given this :

parameter P$1=24$;

localparam P$2=25$;

reg $[7$:$0]$ y;

$.....................................$

initial

begin

#$100$ P$1=25$;

#$100$ P$2=26$;

#$100$ y $=$ P$1+$P$2$;

end

This code contains errors, What are they?

A parameter doesn$$t need an $=$ in line $1$

B P$1$ cannot be changed in the initial block in line$7$

C P$2$ cannot be changed in the initial block in line $8$

D y cannot be set to unsized number P$1,$ P$2$ in line $9$