Multiple choice Find two identical codes on each line. A B C D E xYZab xYZAb xZYAb xYZAb xZYaB A and C C and E B and D E and B Reveal answer Fill a bubble to check yourself C Correct answer Explanation Codes B and D both show xYZAb - they are identical. The other codes differ: A has 'ab' at the end, C has 'ZYA' instead of 'YZA', and E has 'ZYaB' with different case.