Match the following genera with their respective phylum:

$(a)$ Ophiura	$(i)$ Mollusca
$(b)$ Physalia	$(ii)$ Platyhelminthes
$(c)$ Pinctada	$(iii)$ Echinodermata
$(d)$ Planaria	$(iv)$ Coelenterata

Select the correct option:

• A
  $(a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)$
• B
  $(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)$
• C
  $(a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)$
• D
  $(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)$