Explanation:

- Let's first analyze how 'FUTILE' becomes 'UFITEL':

- The code seems to move the first letter ('F') to the end and shift the rest left:

- 'FUTILE' ? 'UTILE' + 'F' = 'UTILEF'

- But in the coded word, it's 'UFITEL', which means the 2nd and 3rd letters are swapped after shifting (UTILE ? UFITEL).

- Therefore:

- Step 1: Move first letter to end.

- Step 2: Swap the 2nd and 3rd letters in the resulting word.

- Let’s apply this to 'OCTAVE':

- Step 1: Move first letter 'O' to end: 'CTAVEO'

- Step 2: Swap the 2nd and 3rd letters: 'C' (1st), swap 'T' and 'A' ? 'A', 'T', then 'V', 'E', 'O'.

- So, it becomes 'COATVE'.

- Now, let's check the options:

1. COATEV

2. PDUBWF

3. COTAEV

4. LXGRWG

- Only Option 1: COATEV and Option 3: COTAEV are close.

- According to our logic, the correct answer is COATEV.

Correct Answer:

Option:1 - COATEV