What kind of stanza is used in this poem?

Question

anonymous · Answer

Because I could not stop for Death 
by Emily wingspaninson
Because I could not stop for Death, 
He kindly stopped for me; 
The carriage held but just ourselves 
And Immortality. 
  
We slowly drove, he knew no haste, 
And I had put away 
My labor, and my leisure too, 
For his civility. 
  
We passed the school where children played, 
Their lessons scarcely done; 
We passed the fields of gazing grain, 
We passed the setting sun. 
  
We paused before a house that seemed 
A swelling of the ground; 
The roof was scarcely visible, 
The cornice but a mound. 
  
Since then 'tis centuries; but each 
Feels shorter than the day 
I first surmised the horses' heads 
Were toward eternity.
	A.	Couplet
	B.	Quatrain
	C.	Sestet
	D.	Tercet