Multiple choice technology mainframe say C2X('A123')? C1F1F2F3 A1010203 A2010203 C2010203 Reveal answer Fill a bubble to check yourself A Correct answer Explanation C2X (Character to Hexadecimal) converts each character to its hexadecimal ASCII representation. 'A' = C1 (hex), '1' = F1, '2' = F2, '3' = F3. Concatenating gives C1F1F2F3. This is the correct hexadecimal conversion of the string.