There are six people A, B, C, D, E and F sitting around a triangular table but not necessarily in the same order. Three are seated at the corner and three are seated at the sides of the table. Persons seating at the corners are facing away from the center and persons seating at the side are facing towards the center. F is facing towards the center and is immediate neighbor of D and B. C is sitting second to the right of D and third to left of F. A is sitting exactly between D and C. Then who is sitting fourth to the left of D?