跑道中线灯最后300米的颜色是哪一种?What is the colour of the last 300m of runway

跑道中线灯最后300米的颜色是哪一种?What is the colour of the last 300m of runway center light?

A.绿色。green

B.红色。red

C.白色。white

正确答案是B