Sentence Correction

A substance from the licorice plant, 50 times sweeter than sucrose, was recently discovered, is not only a natural sweetener but also prevents tooth decay.

(A) A substance from the licorice plant, 50 times sweeter than sucrose, was recently discovered,
(B) A substance, which was recently discovered, from the licorice plant, 50 times sweeter than sucrose,
(C) A substance from the licorice plant, which was recently discovered to be 50 times sweeter than sucrose,
(D) A substance from the licorice plant, 50 times sweeter than sucrose, which was recently discovered,
(E) A recently discovered substance, 50 times sweeter than sucrose from the licorice plant,

this has also been discussed previously.here's the link https://www.beatthegmat.com/1000sc-951-t5016.html

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