To add BigInteger b1 to b2, you write

To add BigInteger b1 to b2, you write

To add BigInteger b1 to b2, you write _________.


A. b1.add(b2);
B. b2.add(b1);
C. b2 = b1.add(b2);
D. b2 = b2.add(b1);
E. b1 = b2.add(b1);

The correct answer is CD