Correct Answer: D
Explanation:
Alphabet Series - A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Between B and E there are 2 alphabets
Between E and I there are 3 alphabets
Between I and N there are 4 alphabets
Between N and T there are 5 alphabets
Between T and the next alphabet, there must 6 alphabets in between
So the next one is A