In each question below is given a group of letters followed by four combinations of digits/symbols numbered a:, b:, c: and d:. You have to find out which of the combinations correctly represents the group of letters based on the following coding system and the conditions and mark the numbers of that combination as your answer. If none of the four combinations correctly represents the group of letters, give e: i.e. ‘None of these’ as your answer.

Letters K E T J H I F A L U B M O R P
Digits/Symbol 3 7 % $ 4 * 1 9 8 6 # @ 2 5 ©

Conditions:
(i) If the first as well as the last letter is a vowel their codes are to be swapped.
(ii) If the first as well as the last letter is a consonant both are to be coded by £.
(iii) If the first letter is a vowel and the last letter is a consonant, the vowel is to be coded by ∆ and the consonant is to be coded by ↑.