If all letters at odd positions are written in serial order from left to right, then this series will be :
A C E G I K M O Q S U W Y
After this even positioned letters are written in reverse, the series becomes :
A C E G I K M O Q S U W Y , Z X V T R P N L J H F D B
Now, 17th letter from left end = T
6th letter to the left of T = U
Thus, Ans - (D)
If all letters at odd positions are written in serial order from left to right, then this series will be :
A C E G I K M O Q S U W Y
After this even positioned letters are written in reverse, the series becomes :
A C E G I K M O Q S U W Y , Z X V T R P N L J H F D B
Now, 17th letter from left end = T
6th letter to the left of T = U
Thus, Ans - (D)