In the following number sequence, how many such even numbers are there which are exactly divisible by its immediate preceding number but not exactly divisible by its immediate following number ?
3 8 4 1 5 7 2 8 3 4 8 9 3 9 4 2 1 5 8 2
Option:
A. One
B. Two
C. Three
D. Four
E. None of these