The student wants to emphasize a similarity between the items found a… | Verbal SAT Question

While researching a topic, a student has taken the following notes:

The Clovis First hypothesis proposes that ancient humans known as Clovis were the first to populate North America.
The Clovis arrived around 13,000 years ago.
Butchered mammoth bones found at the Lamb Spring site in Colorado date to approximately 15,000 years ago.
Stone tools found at the Burnham site in Oklahoma date to approximately 22,000 years ago.
These items support the idea that humans were present in North America before the Clovis population arrived.

The student wants to emphasize a similarity between the items found at Lamb Spring and those found at Burnham. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Butchered mammoth bones from Lamb Spring date to approximately 15,000 years ago; in addition, stone tools (which date to approximately 22,000 years ago) were discovered at Burnham.

Objects discovered at Lamb Spring date to approximately 15,000 years ago; those found at Burnham precede them, however, dating to approximately 22,000 years ago.

The Clovis First hypothesis proposes that the Clovis, arriving around 13,000 years ago, were the first humans in North America.

Although the stone tools found at Burnham are older than the butchered mammoth bones found at Lamb Spring, both clearly predate the arrival of the Clovis population.