Please choose the correct solution to the question: How to get teeth professionally whitened.

Solution1: Your Dentist will place bleaching gel in a tray and fit in your mouth against your teeth, then use a laser for 30 minutes or less to keep teeth warm.

Solution2: Your Dentist will place bleaching gel in a tray and fit in your mouth against your teeth, then use a laser for 30 minutes or less to activate gel and whiten quickly.

Answer format: solution1/solution2
Answer: solution2