Refer to the following number, symbol series and answer the question. Counting to be done from left to right only.
(Left) @ 8 $ 7 3 6 & Ω 9 % + 5 4 2 # 1 * £ (Right)
How many such symbols are there each of which is immediately preceded by another symbol and also immediately followed by another symbol?
A3
B1
C2
D0