Which of the following are the characters of dinoflagellates?
$(i)$ They are planktonic golden yellow algae with soap box like structure.
$(ii)$ They are marine biflagellated protista.
$(iii)$ They appear yellow,green,brown,blue and red in colour.
$(iv)$ The cell wall has stiff cellulose plates on the outer surface.
$(v)$ They are saprophytic (or) parasitic unicellular forms.

• A
  $(i), (ii) \text{ and } (iii)$
• B
  $(i), (ii) \text{ and } (v)$
• C
  $(ii), (iii) \text{ and } (iv)$
• D
  $(ii), (iv) \text{ and } (v)$