Compensation theorem

Q. Find the change in current (in A) in $8\Omega$ resistor branch if a resistor of $2\Omega$ is added. Also, find percentage error in circuit by compensation theorem.

1. 0.65 A, 20%
2. 0.56 A, 11.99%
3. 0.56 A, 10%
4. 0.56 A, 11.2%