Which of the following is most nearly analogous in its cause and condition to the problems

A．A rock-and-roll band considers its music unappealing to a mainstream audience, changes to a more palatable sound, and fails anyway.

B．An author decides that he would have a better niche in a fringe literary market, and sells his work there, but with little profit.

C．An artist decides that his oeuvre of paintings is not commercially viable, and resigns himself to make unpopular but artistically dignified work.

D．A marketing executive decides that a product won't sell, and thus restricts its availability to a certain loyal market.

E．A film actor realizes that he could be more successful working in theater, and though he achieves success, finds he misses his old form