Read the poem. The Courage That My Mother Had

by Edna St. Vincent Millay.

The courage that my mother had
Went with her, and is with her still:
Rock from New England quarried;
Now granite in a granite hill.
The golden brooch my mother wore
She left behind for me to wear;
I have no thing I treasure more:
Yet, it is something I could spare.
Oh, if instead she’d left to me
The thing she took into the grave!—
That courage like a rock, which she
Has no more need of, and I have.

How do the second and third stanzas in "The Courage That My Mother Had" contribute to the poem's meaning?

A: They explain that the speaker wishes she could exchange her mother's brooch for her mother's courage.

B: They show that the speaker is grateful to wear her mother's brooch in celebration of her life.

C: They highlight the speaker's various memories of the time she spent with her mother.

D: They emphasize the speaker's resentment toward her mother for leaving her behind with nothing.