Read the following sentences from "Day of the Butterfly" in which Myra, who is hospitalized, is unwrapping gifts brought to her by her classmates.
She began to unwrap the presents, with an air that not even Gladys could have bettered, folding the tissue paper and the ribbons, and drawing out books and puzzles and cutouts as if they were all prizes she had won. Miss Darling said that maybe she should say thank you, and the person's name with every gift she opened, to make sure she knew whom it was from, and so Myra said, "Thank you, Mary Louise, thank you, Carol," and when she came to mine she said, "Thank you, Helen."
Which of the following best describes the relationship between Myra and her classmates?
A. admiring
B. cordial
C. formal
D. warm