In a mixed letter coding system, if the word 'CAT' is coded as 'XZY', and 'DOG' is coded as 'ABC', what is the code for 'AT' if 'A' is coded as 'X' and 'T' is coded as 'Y'?

A. XY

In a mixed letter coding system, if 'CAT' is coded as '312' and 'DOG' is coded as '415', what is the code for 'GAT'?

B. 314

If 'HELLO' is coded as 'KHOOR' and 'WORLD' is coded as 'ZRUOG', what is the code for 'LOW' based on the given codes?

B. KOW

In a mixed letter coding system, if 'TRAIN' is coded as 'UQJRO', and 'PLANE' is coded as 'QMBOF', what is the code for 'AN' based on the given codes?

A. QO

If 'A' is coded as '1', 'B' as '2', and 'C' as '3', what is the code for the word 'CAB'?

C. 231