Q: 1 (IAS/2008)

In the series AABABCABCDABCDE... Which letter occupies the 100th position?
question_subject: 
Logic/Reasoning
question_year: 
2008
question_exam: 
IAS
question_sub_subject: 
Reasoning
question_topic: 
Analytical
stats: 
0,152,152,24,152,96,32