Trying to end a four-game losing streak, the Raiders went home for a Week 13 fight with the Houston Texans.  In the first quarter, Oakland trailed early with DB Demarcus Faggins returning a fumble 58 yards for a touchdown, along with the score of the period.  In the second quarter, the Raiders climbed back into the game and into the lead with RB Justin Fargas' 3-yard TD run, along with MLB Kirk Morrison returning a fumble 35 yards for a touchdown.  In the third quarter, Oakland's lead vanished with RB Wali Lundy's 3-yard TD run for the only score of the period.  In the fourth quarter, the Texans wrapped up the game with kicker Kris Brown nailing a 42-yard, a 47-yard, and a 39-yard field goal.  The Oakland Raiders secondary (which is ranked #1 in the NFL) held the Texans to &#8722;5 yards passing, yet the Raiders were unable to pull out the win. With their fifth-straight loss, the Raiders fell to 2-10.
Question: How many defensive touchdowns were scored in the game?
Answer: 2