In the passage below, Dr. Schultz is discussing the injections and the learning ability of the rats in group A. Read the passage and then answer the text evidence question below. Dr. Schultz: "Can you imagine one of the lab rats doing that? Or even one of the controls? We've got to try to grasp what we have on our hands. The A group is now three hundred per cent ahead of the control group in learning, and getting smarter all the time. B group is only twenty per cent ahead. It's the new DNA that's doing it. We have a real breakthrough, and since it is DNA, we may very well have a true mutation, a brand new species of rat. But we've got to be careful with it. I think we should go ahead now with the next injection series."

Prompt: What is causing the A group of rats to be ahead in learning?
Claim: The A group of rats is ahead in learning because of the DNA.

Evidence: Which text evidence below can be used to support the claim?Immersive Reader
(2 Points)