Refer to the following number series and answer the question that follows (all numbers are single digit numbers only). Counting to be done from left to right only.
(Left) 3 2 4 9 1 8 7 6 3 2 1 5 6 4 7 8 3 9 4 6 5 7 4 1 5 7 2 (Right)

How many such even digits are there each of which is immediately preceded by a perfect square and immediately followed by an odd digit?
(NOTE: 1 is also a perfect square.) ​​

Given: (Left) 3 2 4 9 1 8 7 6 3 2 1 5 6 4 7 8 3 9 4 6 5 7 4 1 5 7 2 (Right)

Logic: Perfect Square | Even Digit | Odd Digit

Two such even digits are there each of which is immediately preceded by a perfect square and immediately followed by an odd digit.

Thus, correct option is (b).