Which line from the poem describes an action taken by the train which enables it to behave in a "supercilious" manner?
Responses

An "I like to see it lap the miles,
And lick the valleys up"
"I like to see it lap the miles, And lick the valleys up"

B"Stop -- docile and omnipotent --
At its own stable door"
"Stop -- docile and omnipotent --, , At its own stable door"


C" And then, prodigious, step
Around a pile of mountains"
"And then, prodigious, step, Around a pile of mountains"

D"Then chase itself downhill
And neigh like Boanerges"