Read carefully the following statements:
$I.$ Funaria possesses unicellular and unbranched rhizoids.
$II.$ Gemmae are asexual buds, which originate from small receptacles called gemma cups.
$III.$ The Sphagnum plants have a magnificent property of retaining water.
$IV.$ Mosses along with lichens are the first organisms to colonise rocks.
Which of the statements given above are correct?

• A
  $I, II$ and $III$
• B
  $I, III$ and $IV$
• C
  $II, III$ and $IV$
• D
  $I, II, III$ and $IV$