If you have declared an ArrayList of Strings named myStrings, which of the following is not a legal method call?

A$.$ myStrings.add$("$onion$")$;

B$.$ myStrings.remove$("$onion$")$;

C$.$ int s $=$ myStrings.size$()$;

D$.$ myStrings.add$(0,$ "leek"$)$;