Determine the output of the following code: public class Mystery \{ public static void main(String args[]) \& String a = "Happy Valentine's Day!"; String b= "Winter Break"; String c = "Go Skil"; String d= "Twinkle TWINKLE"; Systemout.printin(a.length()): /Fpart a System.out.println(a.charAt(10)); //part b System.out.println(a.indexOf("Day")); //part c System.out.println(b.tolowerCase()); I/part d b=b. substring (4,11); char b1 = b.charAt(3); System.out.printin(CharacteristowerCase(b1)): I/part System.out.println(c); //part f c=c. substring(3); System.out.printlin(c); //part g System.out.printlin(c)ength()) I/part h System.out.println(d.charAt(dindexOf("k")-2)): I/part i System,out.printlin(d.charAt(dindexOf" W W")+2)): I/part