Consider the following four statements. Which of them are wrong?
$(a)$ The sporophyte in liverworts is more elaborate than that in mosses.
$(b)$ $Salvinia$ is heterosporous.
$(c)$ The life cycle in all seed-bearing plants is diplontic.
$(d)$ In $Pinus$,male and female cones are borne on different trees.

• A
  Statement $(a)$ and $(c)$
• B
  Statement $(a)$ and $(d)$
• C
  Statement $(b)$ and $(c)$
• D
  Statement $(a)$ and $(b)$