Read these lines from Robert Frost's "The Road Not Taken."
And sorry I could not travel both
And be one traveler, long I stood
Which idea is conveyed by this part of the extended metaphor that is created throughout the poem?
A. The speaker desired to always be traveling.

B. The speaker desired to always travel alone.

C. The speaker could only travel to one place.

D. The speaker could only make one choice.