Which of the Following Is True About Trademark Registration

Multiple Choice

Which of the following is true about trademark registration?

A) Trademark registration is optional, because protection is automatic.
B) Once a trademark is registered, protection cannot be lost.
C) A trademark must be registered prior to its actual use in commerce.
D) The registration of a trademark can be renewed an unlimited number of times.
E) The registration of a trademark can be renewed for 50 years.