1) Consider a method with the following specification. String dayOfWeek( int day, String month, int year) o Pre-condition: day>0; year o Post-condition: return a string representing the day of the week ("Sunday.Monday..) for the date represented by this day, month, and year. Which of the following is the most appropriate set of equivalence classes for the int parameter day? Note that, because of the pre-condition, we do not need to test for day 0. Let's forget about leap years for now. O [day lO s day 31 1.( day | day 31) O (day 10 31) O (dayl day O( day l0 day 365)