Choose the missing terms out of the given alternatives : A, B, B, D, C, F, D, D, H. E, ?, ?

Answer: Option D

The given sequence is a combination of two series:
I: 1st , 3rd, 5th, 7th, 9th, 11th terms i.e., A, B, C, D, E, ?
II: 2nd, 4th, 6th, 8th, 10th terms i.e., B, D, F, H, ?
Clearly , I: consists of consecutive letters while II: consists of alternate letters.
So, the missing letter in I is F, while that in II is J.
So, the missing terms i.e., 10th and 11th terms re J and F respectively.