Refer to the following number, symbol series and answer the question. Counting to be done from left to right only.
(Left) @ 8 $ 7 + 5 4 2 Ω # 1 * £ 3 6 & 9 % (Right)
How many such symbols are there each of which is immediately preceded by a number and also immediately followed by another symbol?
A4
B1
C3
D2