I shared with her my boring life- Missing fun and lacking friends.
She said, "The effort that you make-
On that all happiness depends."

How does the author's word choice here affect the tone of the poem?

A. It conveys a mocking tone because the speaker is very condescending.

B. It conveys a confusion because the speaker doesn't want to change.

C. It conveys a sarcastic tone because the speaker is very angry.

D. It conveys a gloomy tone because the speaker is unhappy.