What is an advantage of a manufactured dental emergency supply kit?

A. The dentist usually has extensive training with all of the items provided in the kit.
B. These kits are often available with automatic replacement of outdated medications.
C. Malpractice insurance rates generally are lower for dental practices that use manufactured kits rather than homemade kits.
D. These kits are usually accompanied by a telephone "hotline" service that provides "real-time" instructions in the event of a dental emergency.

Answer: B