What is the output of this program? class Output { public static void main(String args[]) { int a,b,c,d; a=b=c=d=20 a+=b-=c*=d/=20 System.out.println(a+" "+b+" "+c+" "+d); } }

• A. compile time error
• B. runtime error
• C. a=20 b=0 c=20 d=1
• D. none of the mentioned