A licensed practitioner works from two different office locations; office A and office B. The practitioner usually prescribe, administer, dispense and stock controlled substances from office A regularly.

From office B, he prescribes controlled substances but neither administers nor otherwise dispenses as a regular part of the professional practice. He, additionally, does not stock controlled substances at office B. Which of the following is TRUE?

a. Only office A shall obtain a controlled substance registration.
b. Only office B shall obtain a controlled substance registration.
c. Neither office A nor office B requires controlled substance registration.
d. A separate registration shall be required at each principal place of business; office A and office B.