All of these are true for home bleaching technique, except:: (A) Dentist prescribed home technique, (B) It contains 10-15% carbamide peroxide, (C) Bleaching both arches at one time is preferred, (D) Patient compliance is needed
Answer is C. HOME BLEACHING TECHNIQUE/NIGHT GUARD BLEACHING
Commonly used solution for night guard bleaching 

10% carbamide peroxide with or without carbopol. 
15% carbamide peroxide.
Hydrogen peroxide (1-10%). 

Key concept: 
Bleaching would be done only one arch at a time.