This question is based on General Literary Appreciation.

'I have said too much unto a heart of stone,

And laid my honour too unchary on it',

There's something in me that reproves my fault,

But such a headstrong potent fault it is

That it but mocks reproof.'.

William Shakespeare: Twelfth Night

A heart of stone in the lines above is an example of

• A litotes
• B metonymy
• C assonance
• D metaphor