Read this poem.

Worry makes an ache—
stomach swims, head throbs . . .
It’s an unwanted guest
with endless requests.
Like an empty piggy bank
Worry offers nothing.
Which line from the poem contains a metaphor?
A. Worry makes an ache—
B. stomach swims, head throbs . . .
C. It’s an unwanted guest
D. Like an empty piggy bank