What does the mask symbolize in this excerpt from Paul Laurence Dunbar's poem, "We Wear the Mask?"

We wear the mask that grins and lies,
It hides our cheeks and shades our eyes,--
This debt we pay to human guile;
With torn and bleeding hearts we smile,
And mouth with myriad subtleties.
Select one:
a. Psychological façade
b. Happiness
c. Both A and B
d. None of the above

Question

What does the mask symbolize in this excerpt from Paul Laurence Dunbar's poem, "We Wear the Mask?"

We wear the mask that grins and lies,
It hides our cheeks and shades our eyes,--
This debt we pay to human guile;
With torn and bleeding hearts we smile,
And mouth with myriad subtleties.
Select one:
a. Psychological façade
b. Happiness
c. Both A and B
d. None of the above