Mother : Have you returned your laptop to your brother, Elsa?

Elsa : I am sorry mom, I haven’t returned it

Mother : It’s okay, But, you have to return it tomorrow, because he needs to do his thesis

Elsa : Okay, Mom

The underlined sentence means….her brother’s laptop

A.     the mother forgot
   
B.     Elsa bring his brother’s laptop
   
C.     Elsa did’nt remember to return
   
D.     The mother reminded