Refer to the following number and symbol series and answer the question that follows.Counting to be done from left to right only. (All numbers are single-digit numbers only.)

(Left) 7 $ 4 1 7 1 9 6 2 + 5 = 6 3 % 7 5 # 8 @ 4 5 & 7 8 (Right)

How many such symbols are there each of which is immediately preceded by an oddnumber and also immediately followed by an even number?​​

Given: (Left) 7 $ 4 1 7 1 9 6 2 + 5 = 6 3 % 7 5 # 8 @ 4 5 & 7 8 (Right)

Logic: Odd Number | Symbol | Even Number

Three symbols are there each of which is immediately preceded by an oddnumber and also immediately followed by an even number.

Thus, correct option is (a).