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