Directions: Study the following information carefully and answer the questions given below. Nine boxes B1, B2, B3, B4, B5, B6, B7, B8, and B9 are kept over one another and numbered from 1 to 9 but not necessarily in the same order. There are at least three boxes between B4 and B7. B9 is always at th

Directions: Study the following information carefully and answer the questions given below.

Nine boxes B1, B2, B3, B4, B5, B6, B7, B8, and B9 are kept over one another and numbered from 1 to 9 but not necessarily in the same order. There are at least three boxes between B4 and B7. B9 is always at the top. B2 is not an immediate neighbour of B1 or B5. Box numbered as 6 is kept just above the B5 and just below B6 and is at position 6 from top. There is only one box between the boxes numbered 4 and 5. Box B8 is marked as number 6. Either box B2 or Box B5 is marked as number 2. The box which is marked as number 3 is at 2^nd position from bottom and the box which is marked as number 8 is at 5^th position from top. The box which is marked as 1 and is always at the bottom. B1 is kept at 3^rd position from the top. Box B3 is numbered with an odd prime number. There is one box between the boxes B3 and B4. Box B4 is not numbered 4.
Which of the box is at bottom?
1). B1
2). B2
3). B3
4). B4

---