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 'DHW', what is the code for 'DOG'?

B. EQL

In a coding scheme, 'FISH' is coded as '6789' and 'BIRD' is coded as '1234'. What is the code for 'RIB'?

B. 241

If 'SUN' is coded as '789' and 'MOON' is coded as '4567', what is the code for 'NOON'?

A. 4567

In a certain code, 'APPLE' is coded as 'ZKQOV'. How is 'ORANGE' coded in the same language?

B. LQZOV