Multiple choice Find two identical codes on each line. A B C D E XyAg4 xyAg4 XyAg4 XYag4 xYag4 A and C B and D C and E E and B Reveal answer Fill a bubble to check yourself A Correct answer Explanation Code A is 'XyAg4' and code C is also 'XyAg4' - they are identical. Code B is 'xyAg4' (lowercase x), D is 'XYag4' (uppercase Y, lowercase a g), and E is 'xYag4' (lowercase x, uppercase Y, lowercase a g). Only A and C match exactly.