Which of the Following Statements Best Describes a Strategic Alliance

Which of the following statements best describes a strategic alliance?

A) It is a cooperative arrangement in which two or more firms combine their resources and capabilities to create new value.
B) It is an arrangement where a firm purchases an input from another firm with no obligation to have a long-term relationship with the other firm.
C) It is an unofficial arrangement in which two large firms cooperate unofficially to control production and prices within a certain market segment.
D) It is a cooperative arrangement where a firm which is on the verge of shutting down sells all of its assets to another firm.