Correct Option: B
Split the word into two parts and append the first part at the end of second.
From question it is clear that we need to make 2 words from word APTITUDE where first word should have first 5 alphabets and remaining 3 alphabets will be part of 2nd word.
APTITUDE ⇒ APTIT + UDE ⇒ UDEAPTIT
So the code for APTITUDE is UDEAPTIT.