Fossil A is found two layers of strata below a layer that contains volcanic ash. Fossil B is from a different organism and is found immediately above the layer of ash. The ash has been dated to be about 125 million years old. Which statement below is correct about the age of the fossils?

Fossil B is 125 million years old, but we have no information about the age of fossil A.

Fossil A must be older than 125 million years old, while fossil B is less than 125 million years old.

Fossil A must be younger than 125 million years old, but we have no information about the age of fossils found above the ash layer.

Fossil B must be older than fossil A, while fossil A must be less than 125 million years old.