Which of the following sentences from the text BEST indicates that the teacher is very

Which of the following sentences from the text BEST indicates that the teacher is very considerate?

A. In her calm，motherly voice she said，“By the end of winter，…”（Paragraph 2）

B. With the grace that only experience can bring，she struggled to…（Paragraph 4）

C. …. she still managed to look both helpful and interested. （Paragraph 4）

D. …，she managed to act as though I wasn’t an annoying little girl.（Paragraph 4）