When a product name becomes generic, what will happen next?

Question $10$ options:

a$)$

The product name is no longer recognized as the exclusive property of one firm.

b$)$

Competitors are prohibited by law from using the trademark.

c$)$

The price will have to drop to appeal to lower$-$income consumers.

d$)$

The firm must use black$-$and$-$white packaging.