What is a Patent?

What is a Patent?
A . A Patent is a property right granted to an inventor to exclude others from making, using, offering for sale, or selling the invention for a limited time.
B. Legal protection for words, names, symbols, devices, or images applied to products or used in connection with goods or services to identify their source.
C. Legal protection of the expression of ideas in literary, artistic, and musical works.
D. A Patent is a the hereditary right granted to an inventor to exclude others from making, using, offering for sale, or selling the invention for a limited time.

Answer: A