Identify the missing letter in the series: a, e, i, o, ?

A. U

If 'APPLE' is written as 'ZKOVO', how would 'ORANGE' be coded?

C. LIZMV

Bird is to Nest as Bee is to ____?

B. HIVE

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

A. NOP

In a cooking competition, five chefs A, B, C, D, and E present their dishes in the following order: A presents before B but after C. D presents after E but before B. What is the correct order of presentations?

D. C, E, D, A, B