What does the author mean when he says， "They still have a bit of time" ？

What does the author mean when he says， "They still have a bit of time" ？ 查看材料

A.Designer babies will soon be a reality.

B.Nature will be altered by designer babies.

C.There is no need at the moment to be too worried about designer babies.

D.Scientists are working against time to design baby.

请帮忙给出正确答案和分析，谢谢！