Read the following passage from Douglass's speech:

The papers and placards say, that I am to deliver a 4th [of] July oration. This certainly sounds large, and out of the common way, for it is true that I have often had the privilege to speak in this beautiful Hall, and to address many who now honor me with their presence.
How does Douglass establish ethos in this passage?

A.
Douglass expresses his social position in relation to his audience.

B.
Douglass condescends to his audience about having to speak to them on a holiday.

C.
Douglass shows his humility at speaking to the audience on this occasion.

D.
Douglass points out how little he knows about his audience and the meaning of Independence Day.

A. Douglass expresses his social position in relation to his audience.