Holding a copyright:

Select one:

a$.$ Gives its owner the exclusive right to publish and sell a musical or literary work during the life of the creator plus $70$ years.

b$.$ Gives its owner an exclusive right to manufacture and sell a patented item or to use a process for $20$ years.

c$.$ Gives its owner an exclusive right to manufacture and sell a device or to use a process for $50$ years.

d$.$ Indicates that the value of a company exceeds the fair market value of a company's net assets if purchased separately.

e$.$ Gives its owner the exclusive right to publish and sell a musical or literary work during the life of the creator plus $20$ years.