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How many $9's$ are there in the following number sequence which are immediately preceded by $3$ but not immediately followed by $4$?
$2\ 3\ 9\ 5\ 1\ 3\ 9\ 6\ 7\ 3\ 9\ 4\ 8\ 9\ 3\ 4\ 9\ 3\ 2\ 3\ 9\ 8\ 3\ 9\ 3$

1. $3$
2. $2$
3. $1$
4. $4$
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$2\ 3\ {\color{Blue} 9}\ 5\ 1\ 3\ {\color{Blue} 9}\ 6\ 7\ 3\ 9\ 4\ 8\ 9\ 3\ 4\ 9\ 3\ 2\ 3\ {\color{Blue} 9}\ 8\ 3\ {\color{Blue} 9}\ 3$

Ans: D

by (66 points) 3