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,"