In this question, a group of letters is coded using numbers as per the table given below and the conditions which follow. The correct combination of codes following the conditions is your answer.

Letter/ Symbol	Y	T	V	R	I	G	E	A
Code	4	6	8	0	3	5	7	9

Conditions:
(i) If the first element is a vowel and the last, a consonant, the codes for these two (the first and the last elements) are to be interchanged.
(ii) If the first element is a consonant and the last, a vowel, the first and last elements are to be coded as
(iii) If both the third and the fifth elements are vowels, the fifth element is to be coded as the code for the third element and vice-versa.
Question: GRAVITY

I. If the first element is a vowel and the last, a consonant, the codes for these two are to be interchanged.  (This condition is not applied).

II. If the first element is a consonant and the last, a vowel, the first and last elements are to be coded as.  (This condition is not applied).

III. If both the third and the fifth elements are vowels, the fifth element is to be coded as the code for the third element and vice-versa.  (This condition is applied).

Code of I and A  are 3 and 9 respectively  After applying the given conditions, the correct code for the word "GRAVITY" is:

Thus, correct option is (b).