Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only.
(Left) @ 3 5 9 ^ % 4 $ \ @ 4 \ $ < < 6 > / 8 < & (Right)
How many such numbers are there each of which is immediately preceded by a symbol and also immediately followed by a symbol?
AOne
BThree
CFour
DTwo