I would say A but D could also be said softly
All these<span> poems are written in </span>decasyllabic<span> rhymed verse, with varied arrangement of the rhymes. An Introduction to the Study of Browning. Arthur Symons. The </span>decasyllabic line<span> was an old measure; so was the seven-</span>line<span> stanza, both in Provençal and French. Medieval English Literature William Paton Ker. The whole ten ...</span>
The answer is D. Page 1478, second to last sentence to confirm it youself.