The phrase "draws the line at"(para.2) most probably means______.

A．it will take some time for people to become regular customers of cosmetic surgery.
B．People can afford cosmetic surgery as long as they want it
C．Cosmetic surgery is still for the rich and famous
D．People may find cosmetic surgery quite attractive

A．it should be done hi one's thirties rather than fiftieth
B．its cost has fallen considerably
C．it is available to most people including the most advanced laser technology
D．it has become more and more convenient