Multiple Choice Identify the choice that best completes the statement or answers the que 1. Which of the following is a valid Java identifier? Spay b. 4myGrade! c. newGrade! d. 1dollar static final int EndVal-1: int double; int num console.nextInt(); while (num != Endval) double num * 2; System.out.println (double); num console.next1nt(); 2. The above code is an example of a(n)--while loop. a. flag-controlled b. counter-controlled c. EOF-controlled d. sentinel-controlled 3. The length of the string "first java program" is: C. 19 d. 20 a. 16 b. 18 int x, y if (x 7) else else 9? 4. Based on the code above, what is the value of y if x = c. 6 a. b. 4 5, Based on the code above, what is the value of y if x = 4? c. 6 a. b. 4