Assume that an ArrayList of String objects named arr has been declared and initialized. What does arr.size$()$ return after the following code is run?

arr.add$("$A$")$;

arr.add$(0,C^{\text{'}\text{'}})$;

arr$*add(1,D^{\text{'}\text{'}})$;

arr.add$(2,F^{\text{'}\text{'}})$;

arr.add$(4,G^{\text{'}\text{'}})$;