Number of letters in six words B1, B2, B4, B5, and B6 are compared. Number of letters in B1 are least. Number of letters in B4 are more than B1 but less than B2. Number of letters in B6 are more than B3 and B5. Number of letters in B3 are more than B2. If number of letters in B5 are more than B3, then the number of letters in B4 are less than the number of letters of how many words?

A

4

B

2

C

1

D

3