Which of the following best describes cross-licensing?

A) One patent holder licenses another individual to use a patented object, and in return, the patent holder is given the right to hold any patents the licensee may have.
B) Two patent holders license each other to use their patents as long as both holders are allowed to license to other parties.
C) Two different patent holders license a third individual to use a patented object, and that third party uses the two patents in an authorized manner.
D) Two patent holders license each other to use their patents on the condition that neither licenses anyone else to use his or her patent without the other's consent.

D