.What is the age of point A in the image below? Use the legend on the left, which provides ages in Ma. The mid-ocean ridge is represented by a dashed line in the center of the magnetic stripes. Magnetic anomalies at mid-ocean ridges Mid-ocean ridge axis Magnetic reversal time scale 0 Ma normal 8 Ma reversed 18 Ma normal 20 Ma reversed 35 Ma normal 50 Ma reversed 70 Ma Map of magnetic anomalies at a mid-ocean ridge A) 8 Ma B) 18 Ma C) 50 Ma D) 70 Ma