After some time of this the wolf started off at an easy lope in a manner that plainly showed he was going somewhere. He made it clear to Buck that he was to come, and they ran side by side through the somber twilight, straight up the creek bed, into the gorge from which it issued, and across the bleak divide where it took its rise. Which two phrases from the excerpt best reveal the wolf's shift toward Buck?

A. After some time

B. at an easy lope

C. that plainly showed

D. he was to come

E. ran side by side