Read these lines of poetry: 
 The wicked dragon breathed fire, 
 and its wings were black as coal. 
 But the knight's eyes were diamonds, 
 and he kept his self-control. 
 Which line contains a metaphor?
 A.
 "and its wings were black as coal."
 B.
 "and he kept his self-control."
 C.
 "The wicked dragon breathed fire,"
 D.
 "But the knight's eyes were diamonds,"