What was discovered about the age of the ocean floor?

I did some research and I think it's B

Explanation:

The rocks get older with distance from the ridge crest. The scientists were surprised to find that the oldest seafloor is less than 180 million years old. This may seem old, but the oldest continental crust is around 4 billion years old.

hi there!

the answer you are looking for is relatively steep.

have a nice day!