Read the passage from "To Autumn." 
 Then in a wailful choir the small gnats mourn
 Among the river sallows, borne aloft, 
 Or sinking as the light wind lives or dies;
 --------------------------------------
 Which best identifies and interprets the use of the underlined poetic device? (The light wind lives or dies is the poetic device)
 A. Simile; the wind is like an unhealthy river in the summer
 B. Metaphor; the wind is blowing hard enough to cry mournfully
 C. Imagery; the fluttering gnats appeal to the reader's sense of smell
 D. Personification; The stillness and gusts of the wind are described as its life and death