You are babysitting your nieces, Rosa and Isabelle. You leave you phone on the sofa, and Rosa hides your phone under a pillow while you are out of the room. When you return, Rosa knows that you will look for your phone on the sofa, where you left it. But Isabelle, who is younger than Rosa, thinks you will know that it is under the pillow. Rosa is likely ___, while Isabelle is probably ___.
◦ at least age 4; age 3 or younger
◦ at least age 5; around age 4
◦ at least age 8; around age 6
◦ at least age 10; age 8 or older