Elater mechanism for seed dispersal is exhibited by Riccia, Marchantia, Dryoptenis, Funaria?

Elaters are the long spindle shaped hygroscopic structures with spiral thickening inside them. They are present inside the capsule of Marchantia and serve in spore dispersal. Dryopteris is a fern while Riccia and Funaria lack elaters. So, the correct answer is option B.