1. public class Test { 
	2. public static void main (String []args)  { 
	3. unsigned byte b = 0; 
	4. b--; 
	5.    
	6.   } 
	7. }  
	What is the value of b at line 5?()  
	A. -1
	B. 255
	C. 127
	D. Compilation will fail.
	E. Compilation will succeed but the program will throw an exception at line 4.
 
                            