Why Do Some Firms Choose Not to File for a Patent

Multiple Choice

Why do some firms choose not to file for a patent and instead try to keep the results of their research a trade secret?

A) because firms must disclose information about the product or process being patented in a patent application
B) because trade secrets are never divulged
C) because a patent only gives the inventor exclusive rights to a product or process for 5 years
D) because trade secrets provide the same exclusive legal rights to a product as a patent does