Which of the following poetic lines is an example of a couplet ?

Which of the following poetic lines is an example of a couplet ?

A. “Into my head there will come / a beach of cotton, a dock where from.”
B. “To kiss the sky / to be the sun / is to live forever.”
C. “I heard a car crash / just as I died.”
D. “Death comes for all of us / even you.”