Directions (Q. 72-74): Study the following diagram and convert it into other diagram by implementing the instructions which is given in each step to get next step. 
Interchange the alphabets to get Step 1 according to the arrows in the above figure. 
1) if the pair of alphabets contain one vowel and one consonant and the number with them is greater than 4, then subtract 2 from the given number. 2) if the pair of alphabets contain two consonants and the number with them is odd then add 1 to the given number. 
(i) if the alphabets contain two consonants then change the letters with the next letter in the alphabetical series. (ii) if the alphabet or the pair of alphabets contains one vowel then change the letters with the previous letter in the alphabetical series. 
As per the rules followed in the above step, find out the appropriate steps for the given input and answer the following questions. 
A) OF7
B) OF9
C) LK8
D) VW4
E) CD6
Correct Answer: A
Solution :
Step 1: 
Step 2: 
Step 3: 
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