Refer to the following series and answer the question (all numbers are single digitnumbers only).

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

How many such even digits are there each of which is immediately preceded by an odddigit and also immediately followed by an odd digit?

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

Logic: Odd Digit | Even Digit | Odd Digit

Four even digits are there each of which is immediately preceded by an odd digit and also immediately followed by an odd digit.

Thus, correct option is (d).