What is an ebb current（）.

A.A spherical topmark
B.Red and white retroreflective material
C.A sequential number
D.A red and white octagon

A.Horizontal movement of the water toward the land after high tide
B.Horizontal movement of the water toward the land after low tide
C.Horizontal movement of the water away from the land following high tide
D.Horizontal movement of the water away from the land following low tide