Diversification generally doesn't need to become a strategic priority until a company

A$)$ has integrated backward and forward as far as it can.

B$)$ begins to run out of growth opportunities in its present business and has opportunities to utilize its resources and capabilities in other market arenas.

C$)$ has expanded globally in its mainstay business and runs out of additional foreign markets to enter.

D$)$ starts considering entry into foreign markets.

E$)$ has achieved industry leadership in its main line of business.