He gives his harness bells a shake
To ask if there is some mistake
The only other sound's the sweep
Of easy wind and downy flake.
The woods are lovely, dark and deep, But I have promises to Keep,
And miles to go before I'sleep,
And miles to go before I sleep.
'deep' and 'keep' are_____.

Options

A. Simile
B. Metaphor
C. Rhyming words
D. Alliterative words