Read the lines of poetry from “Stopping by Woods on a Snowy Evening” by Robert Frost.
 From “Stopping by Woods on a Snowy Evening” by Robert Frost
 The woods are lovely, dark, and deep,
 But I have promises to keep,
 And miles to go before I sleep.
 And miles to go before I sleep.
 What does “miles to go” symbolize?
 A. speed
 B. distance
 C. time