Refer to the following number, symbol series and answer the question. Counting to be done from left to right only.
(Left) # 5 4 @ % & * $ 6 8 Ω 9 1 7 3 £ + 2 (Right)
How many such numbers are there each of which is immediately preceded by another number and also immediately followed by another number?
A2
B1
C3
D4